1011212001200 has 60 divisors (see below), whose sum is σ = 2429567180040. Its totient is φ = 404463098880.

The previous prime is 1011212001169. The next prime is 1011212001211. The reversal of 1011212001200 is 21002121101.

It is a super-2 number, since 2×1011212001200² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8866136 + ... + 8979464.

It is an arithmetic number, because the mean of its divisors is an integer number (40492786334).

Almost surely, 2^{1011212001200} is an apocalyptic number.

1011212001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011212001200 is an abundant number, since it is smaller than the sum of its proper divisors (1418355178840).

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

1011212001200 is a wasteful number, since it uses less digits than its factorization.

1011212001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135654 (or 135643 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1011212001200 its reverse (21002121101), we get a palindrome (1032214122301).

The spelling of 1011212001200 in words is "one trillion, eleven billion, two hundred twelve million, one thousand, two hundred".