101111021221210 has 256 divisors, whose sum is σ = 250394455277568. Its totient is φ = 28373305190400.

The previous prime is 101111021221139. The next prime is 101111021221219. The reversal of 101111021221210 is 12122120111101.

It is a super-2 number, since 2×101111021221210² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101111021221219) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1529565019 + ... + 1529631121.

It is an arithmetic number, because the mean of its divisors is an integer number (978103340928).

Almost surely, 2^{101111021221210} is an apocalyptic number.

101111021221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101111021221210 is an abundant number, since it is smaller than the sum of its proper divisors (149283434056358).

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

101111021221210 is a wasteful number, since it uses less digits than its factorization.

101111021221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69909.

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

Adding to 101111021221210 its reverse (12122120111101), we get a palindrome (113233141332311).

The spelling of 101111021221210 in words is "one hundred one trillion, one hundred eleven billion, twenty-one million, two hundred twenty-one thousand, two hundred ten".