1055212155100 has 72 divisors (see below), whose sum is σ = 2313200258208. Its totient is φ = 417775968000.

The previous prime is 1055212155091. The next prime is 1055212155133. The reversal of 1055212155100 is 15512125501.

It is a super-2 number, since 2×1055212155100² (a number of 25 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 23 ways as a sum of consecutive naturals, for example, 36577882 + ... + 36606718.

It is an arithmetic number, because the mean of its divisors is an integer number (32127781364).

Almost surely, 2^{1055212155100} is an apocalyptic number.

1055212155100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055212155100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156600129104).

1055212155100 is an abundant number, since it is smaller than the sum of its proper divisors (1257988103108).

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

1055212155100 is a wasteful number, since it uses less digits than its factorization.

1055212155100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32575 (or 32568 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 28.

The spelling of 1055212155100 in words is "one trillion, fifty-five billion, two hundred twelve million, one hundred fifty-five thousand, one hundred".