221534462021460 has 96 divisors (see below), whose sum is σ = 710078171013120. Its totient is φ = 50553027566208.

The previous prime is 221534462021449. The next prime is 221534462021471. The reversal of 221534462021460 is 64120264435122.

It is an interprime number because it is at equal distance from previous prime (221534462021449) and next prime (221534462021471).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 434228590 + ... + 434738469.

It is an arithmetic number, because the mean of its divisors is an integer number (7396647614720).

Almost surely, 2^{221534462021460} is an apocalyptic number.

221534462021460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221534462021460 is an abundant number, since it is smaller than the sum of its proper divisors (488543708991660).

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

221534462021460 is a wasteful number, since it uses less digits than its factorization.

221534462021460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868967685 (or 868967683 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 221534462021460 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred sixty-two million, twenty-one thousand, four hundred sixty".