213223022111220 has 96 divisors (see below), whose sum is σ = 651308185293696. Its totient is φ = 51689733388800.

The previous prime is 213223022111107. The next prime is 213223022111243. The reversal of 213223022111220 is 22111220322312.

It is a congruent number.

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, 47729730 + ... + 52005510.

It is an arithmetic number, because the mean of its divisors is an integer number (6784460263476).

Almost surely, 2^{213223022111220} is an apocalyptic number.

213223022111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213223022111220 is an abundant number, since it is smaller than the sum of its proper divisors (438085163182476).

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

213223022111220 is a wasteful number, since it uses less digits than its factorization.

213223022111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351361 (or 4351359 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 213223022111220 its reverse (22111220322312), we get a palindrome (235334242433532).

The spelling of 213223022111220 in words is "two hundred thirteen trillion, two hundred twenty-three billion, twenty-two million, one hundred eleven thousand, two hundred twenty".