222121502120001 has 32 divisors (see below), whose sum is σ = 335661161397120. Its totient is φ = 129419212966400.

The previous prime is 222121502119987. The next prime is 222121502120009. The reversal of 222121502120001 is 100021205121222.

It is not a de Polignac number, because 222121502120001 - 2⁴³ = 213325409097793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222121502120001.

It is not an unprimeable number, because it can be changed into a prime (222121502120009) 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, 497849730 + ... + 498295691.

It is an arithmetic number, because the mean of its divisors is an integer number (10489411293660).

Almost surely, 2^{222121502120001} is an apocalyptic number.

It is an amenable number.

222121502120001 is a deficient number, since it is larger than the sum of its proper divisors (113539659277119).

222121502120001 is a wasteful number, since it uses less digits than its factorization.

222121502120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996145697.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 222121502120001 its reverse (100021205121222), we get a palindrome (322142707241223).

The spelling of 222121502120001 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, five hundred two million, one hundred twenty thousand, one".