101021211100 has 18 divisors (see below), whose sum is σ = 219216028304. Its totient is φ = 40408484400.

The previous prime is 101021211091. The next prime is 101021211107. The reversal of 101021211100 is 1112120101.

It is a super-2 number, since 2×101021211100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021211107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 505105956 + ... + 505106155.

Almost surely, 2^101021211100 is an apocalyptic number.

101021211100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101021211100 is an abundant number, since it is smaller than the sum of its proper divisors (118194817204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101021211100 is a wasteful number, since it uses less digits than its factorization.

101021211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010212125 (or 1010212118 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 101021211100 its reverse (1112120101), we get a palindrome (102133331201).

Subtracting from 101021211100 its reverse (1112120101), we obtain a palindrome (99909090999).

The spelling of 101021211100 in words is "one hundred one billion, twenty-one million, two hundred eleven thousand, one hundred".