101210222021 has 4 divisors (see below), whose sum is σ = 101880488544. Its totient is φ = 100539955500.

The previous prime is 101210221993. The next prime is 101210222027. The reversal of 101210222021 is 120222012101.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101210222021 is a prime.

It is a super-2 number, since 2×101210222021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101210221987 and 101210222005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101210222027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335133035 + ... + 335133336.

It is an arithmetic number, because the mean of its divisors is an integer number (25470122136).

Almost surely, 2^101210222021 is an apocalyptic number.

It is an amenable number.

101210222021 is a deficient number, since it is larger than the sum of its proper divisors (670266523).

101210222021 is an equidigital number, since it uses as much as digits as its factorization.

101210222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670266522.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 101210222021 its reverse (120222012101), we get a palindrome (221432234122).

The spelling of 101210222021 in words is "one hundred one billion, two hundred ten million, two hundred twenty-two thousand, twenty-one".