222100110120021 has 32 divisors (see below), whose sum is σ = 349600103424000. Its totient is φ = 122734388427840.

The previous prime is 222100110119971. The next prime is 222100110120107. The reversal of 222100110120021 is 120021011001222.

It is not a de Polignac number, because 222100110120021 - 2²¹ = 222100108022869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100110120821) 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, 118442571 + ... + 120303128.

It is an arithmetic number, because the mean of its divisors is an integer number (10925003232000).

Almost surely, 2^{222100110120021} is an apocalyptic number.

222100110120021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222100110120021 is a deficient number, since it is larger than the sum of its proper divisors (127499993303979).

222100110120021 is a wasteful number, since it uses less digits than its factorization.

222100110120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238747169.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222100110120021 its reverse (120021011001222), we get a palindrome (342121121121243).

The spelling of 222100110120021 in words is "two hundred twenty-two trillion, one hundred billion, one hundred ten million, one hundred twenty thousand, twenty-one".