101211122021 has 8 divisors (see below), whose sum is σ = 112804966080. Its totient is φ = 90243972288.

The previous prime is 101211121961. The next prime is 101211122053. The reversal of 101211122021 is 120221112101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-101211122021 is a prime.

It is a super-2 number, since 2×101211122021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101211121987 and 101211122005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211122321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156673241 + ... + 156673886.

It is an arithmetic number, because the mean of its divisors is an integer number (14100620760).

Almost surely, 2^101211122021 is an apocalyptic number.

It is an amenable number.

101211122021 is a deficient number, since it is larger than the sum of its proper divisors (11593844059).

101211122021 is a wasteful number, since it uses less digits than its factorization.

101211122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313347163.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101211122021 its reverse (120221112101), we get a palindrome (221432234122).

The spelling of 101211122021 in words is "one hundred one billion, two hundred eleven million, one hundred twenty-two thousand, twenty-one".