201002212021 has 16 divisors (see below), whose sum is σ = 222155437504. Its totient is φ = 180687677184.

The previous prime is 201002211989. The next prime is 201002212043. The reversal of 201002212021 is 120212200102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201002212021 - 2⁵ = 201002211989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 201002211992 and 201002212010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201002212921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345111 + ... + 721876.

It is an arithmetic number, because the mean of its divisors is an integer number (13884714844).

Almost surely, 2^201002212021 is an apocalyptic number.

It is an amenable number.

201002212021 is a deficient number, since it is larger than the sum of its proper divisors (21153225483).

201002212021 is a wasteful number, since it uses less digits than its factorization.

201002212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067380.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201002212021 its reverse (120212200102), we get a palindrome (321214412123).

The spelling of 201002212021 in words is "two hundred one billion, two million, two hundred twelve thousand, twenty-one".