221421226332570 has 64 divisors (see below), whose sum is σ = 589546809146880. Its totient is φ = 52768078587200.

The previous prime is 221421226332547. The next prime is 221421226332611. The reversal of 221421226332570 is 75233622124122.

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, 5686195896 + ... + 5686234835.

It is an arithmetic number, because the mean of its divisors is an integer number (9211668892920).

Almost surely, 2^{221421226332570} is an apocalyptic number.

221421226332570 is an abundant number, since it is smaller than the sum of its proper divisors (368125582814310).

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

221421226332570 is a wasteful number, since it uses less digits than its factorization.

221421226332570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11372430811.

The product of its (nonzero) digits is 483840, while the sum is 42.

Adding to 221421226332570 its reverse (75233622124122), we get a palindrome (296654848456692).

The spelling of 221421226332570 in words is "two hundred twenty-one trillion, four hundred twenty-one billion, two hundred twenty-six million, three hundred thirty-two thousand, five hundred seventy".