101220201111100 has 18 divisors (see below), whose sum is σ = 219647836411304. Its totient is φ = 40488080444400.

The previous prime is 101220201111067. The next prime is 101220201111191. The reversal of 101220201111100 is 1111102022101.

It is a happy number.

It is a super-2 number, since 2×101220201111100² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 506101005456 + ... + 506101005655.

Almost surely, 2^{101220201111100} is an apocalyptic number.

101220201111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101220201111100 is an abundant number, since it is smaller than the sum of its proper divisors (118427635300204).

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

101220201111100 is a wasteful number, since it uses less digits than its factorization.

101220201111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012202011125 (or 1012202011118 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101220201111100 its reverse (1111102022101), we get a palindrome (102331303133201).

The spelling of 101220201111100 in words is "one hundred one trillion, two hundred twenty billion, two hundred one million, one hundred eleven thousand, one hundred".