220121231332030 has 64 divisors (see below), whose sum is σ = 453695824570752. Its totient is φ = 75324378286080.

The previous prime is 220121231332003. The next prime is 220121231332033. The reversal of 220121231332030 is 30233132121022.

It is a junction number, because it is equal to n+sod(n) for n = 220121231331986 and 220121231332004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220121231332033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138323842 + ... + 139906138.

It is an arithmetic number, because the mean of its divisors is an integer number (7088997258918).

Almost surely, 2^{220121231332030} is an apocalyptic number.

220121231332030 is an abundant number, since it is smaller than the sum of its proper divisors (233574593238722).

220121231332030 is a wasteful number, since it uses less digits than its factorization.

220121231332030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586149.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 220121231332030 its reverse (30233132121022), we get a palindrome (250354363453052).

The spelling of 220121231332030 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred thirty-one million, three hundred thirty-two thousand, thirty".