201010222102021 has 4 divisors (see below), whose sum is σ = 202213876126752. Its totient is φ = 199806568077292.

The previous prime is 201010222102009. The next prime is 201010222102033. The reversal of 201010222102021 is 120201222010102.

It is a happy number.

201010222102021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (201010222102009) and next prime (201010222102033).

It is a cyclic number.

It is not a de Polignac number, because 201010222102021 - 2²⁷ = 201010087884293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201010222101986 and 201010222102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201010222102061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601827012115 + ... + 601827012448.

It is an arithmetic number, because the mean of its divisors is an integer number (50553469031688).

Almost surely, 2^{201010222102021} is an apocalyptic number.

It is an amenable number.

201010222102021 is a deficient number, since it is larger than the sum of its proper divisors (1203654024731).

201010222102021 is a wasteful number, since it uses less digits than its factorization.

201010222102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203654024730.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201010222102021 its reverse (120201222010102), we get a palindrome (321211444112123).

The spelling of 201010222102021 in words is "two hundred one trillion, ten billion, two hundred twenty-two million, one hundred two thousand, twenty-one".