221020090065624 has 128 divisors (see below), whose sum is σ = 596467330329600. Its totient is φ = 68038876899840.

The previous prime is 221020090065563. The next prime is 221020090065631. The reversal of 221020090065624 is 426560090020122.

221020090065624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1170618669 + ... + 1170807459.

It is an arithmetic number, because the mean of its divisors is an integer number (4659901018200).

Almost surely, 2^{221020090065624} is an apocalyptic number.

221020090065624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221020090065624 is an abundant number, since it is smaller than the sum of its proper divisors (375447240263976).

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

221020090065624 is a wasteful number, since it uses less digits than its factorization.

221020090065624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261985 (or 261981 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 221020090065624 in words is "two hundred twenty-one trillion, twenty billion, ninety million, sixty-five thousand, six hundred twenty-four".