212920111770 has 32 divisors (see below), whose sum is σ = 511187086080. Its totient is φ = 56758827840.

The previous prime is 212920111759. The next prime is 212920111799. The reversal of 212920111770 is 77111029212.

It is a super-2 number, since 2×212920111770² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1154530 + ... + 1326189.

It is an arithmetic number, because the mean of its divisors is an integer number (15974596440).

Almost surely, 2^212920111770 is an apocalyptic number.

212920111770 is an abundant number, since it is smaller than the sum of its proper divisors (298266974310).

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

212920111770 is a wasteful number, since it uses less digits than its factorization.

212920111770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483590.

The product of its (nonzero) digits is 3528, while the sum is 33.

The spelling of 212920111770 in words is "two hundred twelve billion, nine hundred twenty million, one hundred eleven thousand, seven hundred seventy".