213220946 has 4 divisors (see below), whose sum is σ = 319831422. Its totient is φ = 106610472.

The previous prime is 213220927. The next prime is 213220957. The reversal of 213220946 is 649022312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 212430625 + 790321 = 14575^2 + 889^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53305235 + ... + 53305238.

Almost surely, 2^213220946 is an apocalyptic number.

213220946 is a deficient number, since it is larger than the sum of its proper divisors (106610476).

213220946 is a wasteful number, since it uses less digits than its factorization.

213220946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106610475.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 213220946 is about 14602.0870426114. The cubic root of 213220946 is about 597.4156867078.

The spelling of 213220946 in words is "two hundred thirteen million, two hundred twenty thousand, nine hundred forty-six".