213122301 has 16 divisors (see below), whose sum is σ = 338878464. Its totient is φ = 116488944.

The previous prime is 213122281. The next prime is 213122309. The reversal of 213122301 is 103221312.

It is not a de Polignac number, because 213122301 - 2⁶ = 213122237 is a prime.

It is a super-2 number, since 2×213122301² = 90842230367069202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213122309) 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, 220141 + ... + 221106.

It is an arithmetic number, because the mean of its divisors is an integer number (21179904).

Almost surely, 2^213122301 is an apocalyptic number.

213122301 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

213122301 is a deficient number, since it is larger than the sum of its proper divisors (125756163).

213122301 is a wasteful number, since it uses less digits than its factorization.

213122301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441280.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 213122301 is about 14598.7088812675. The cubic root of 213122301 is about 597.3235426009.

Adding to 213122301 its reverse (103221312), we get a palindrome (316343613).

The spelling of 213122301 in words is "two hundred thirteen million, one hundred twenty-two thousand, three hundred one".