101220000121200 has 120 divisors (see below), whose sum is σ = 324260620738048. Its totient is φ = 26990400003840.

The previous prime is 101220000121193. The next prime is 101220000121249. The reversal of 101220000121200 is 2121000022101.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17820819 + ... + 22803981.

Almost surely, 2^{101220000121200} is an apocalyptic number.

101220000121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101220000121200 is an abundant number, since it is smaller than the sum of its proper divisors (223040620616848).

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

101220000121200 is a wasteful number, since it uses less digits than its factorization.

101220000121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000111 (or 5000100 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 101220000121200 its reverse (2121000022101), we get a palindrome (103341000143301).

Subtracting from 101220000121200 its reverse (2121000022101), we obtain a palindrome (99099000099099).

The spelling of 101220000121200 in words is "one hundred one trillion, two hundred twenty billion, one hundred twenty-one thousand, two hundred".