213122090 has 16 divisors (see below), whose sum is σ = 384283872. Its totient is φ = 85101264.

The previous prime is 213122089. The next prime is 213122093. The reversal of 213122090 is 90221312.

It is not an unprimeable number, because it can be changed into a prime (213122093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12284 + ... + 24023.

It is an arithmetic number, because the mean of its divisors is an integer number (24017742).

Almost surely, 2^213122090 is an apocalyptic number.

213122090 is a deficient number, since it is larger than the sum of its proper divisors (171161782).

213122090 is a wasteful number, since it uses less digits than its factorization.

213122090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36901.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 213122090 is about 14598.7016545993. The cubic root of 213122090 is about 597.3233454758.

The spelling of 213122090 in words is "two hundred thirteen million, one hundred twenty-two thousand, ninety".