220321100213031 has 16 divisors (see below), whose sum is σ = 294696121420800. Its totient is φ = 146414009637408.

The previous prime is 220321100213017. The next prime is 220321100213041. The reversal of 220321100213031 is 130312001123022.

It is not a de Polignac number, because 220321100213031 - 2⁷ = 220321100212903 is a prime.

It is a super-2 number, since 2×220321100213031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220321100212989 and 220321100213007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220321100213041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73963311 + ... + 76884416.

It is an arithmetic number, because the mean of its divisors is an integer number (18418507588800).

Almost surely, 2^{220321100213031} is an apocalyptic number.

220321100213031 is a deficient number, since it is larger than the sum of its proper divisors (74375021207769).

220321100213031 is a wasteful number, since it uses less digits than its factorization.

220321100213031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150849278.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 220321100213031 its reverse (130312001123022), we get a palindrome (350633101336053).

Subtracting from 220321100213031 its reverse (130312001123022), we obtain a palindrome (90009099090009).

The spelling of 220321100213031 in words is "two hundred twenty trillion, three hundred twenty-one billion, one hundred million, two hundred thirteen thousand, thirty-one".