1021011212200 has 96 divisors (see below), whose sum is σ = 2713174113600. Its totient is φ = 350034992640.

The previous prime is 1021011212171. The next prime is 1021011212209. The reversal of 1021011212200 is 22121101201.

It is a super-2 number, since 2×1021011212200² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021011212209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35121271 + ... + 35150329.

It is an arithmetic number, because the mean of its divisors is an integer number (28262230350).

Almost surely, 2^{1021011212200} is an apocalyptic number.

1021011212200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021011212200 is an abundant number, since it is smaller than the sum of its proper divisors (1692162901400).

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

1021011212200 is a wasteful number, since it uses less digits than its factorization.

1021011212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54179 (or 54170 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021011212200 its reverse (22121101201), we get a palindrome (1043132313401).

The spelling of 1021011212200 in words is "one trillion, twenty-one billion, eleven million, two hundred twelve thousand, two hundred".