221625461021466 has 16 divisors (see below), whose sum is σ = 443341326124224. Its totient is φ = 73860086326944.

The previous prime is 221625461021401. The next prime is 221625461021473. The reversal of 221625461021466 is 664120164526122.

It is a super-2 number, since 2×221625461021466² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3766804851 + ... + 3766863686.

It is an arithmetic number, because the mean of its divisors is an integer number (27708832882764).

Almost surely, 2^{221625461021466} is an apocalyptic number.

221625461021466 is an abundant number, since it is smaller than the sum of its proper divisors (221715865102758).

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

221625461021466 is a wasteful number, since it uses less digits than its factorization.

221625461021466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533673445.

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 221625461021466 in words is "two hundred twenty-one trillion, six hundred twenty-five billion, four hundred sixty-one million, twenty-one thousand, four hundred sixty-six".