213455151220 has 12 divisors (see below), whose sum is σ = 448255817604. Its totient is φ = 85382060480.

The previous prime is 213455151211. The next prime is 213455151263. The reversal of 213455151220 is 22151554312.

It can be written as a sum of positive squares in 2 ways, for example, as 51339402724 + 162115748496 = 226582^2 + 402636^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5336378761 + ... + 5336378800.

It is an arithmetic number, because the mean of its divisors is an integer number (37354651467).

Almost surely, 2^213455151220 is an apocalyptic number.

213455151220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213455151220 is an abundant number, since it is smaller than the sum of its proper divisors (234800666384).

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

213455151220 is a wasteful number, since it uses less digits than its factorization.

213455151220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10672757570 (or 10672757568 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 213455151220 in words is "two hundred thirteen billion, four hundred fifty-five million, one hundred fifty-one thousand, two hundred twenty".