213020123242 has 16 divisors (see below), whose sum is σ = 330220287432. Its totient is φ = 102992673280.

The previous prime is 213020123219. The next prime is 213020123257. The reversal of 213020123242 is 242321020312.

It can be written as a sum of positive squares in 4 ways, for example, as 25609920961 + 187410202281 = 160031^2 + 432909^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11485453 + ... + 11503984.

Almost surely, 2^213020123242 is an apocalyptic number.

213020123242 is a deficient number, since it is larger than the sum of its proper divisors (117200164190).

213020123242 is a wasteful number, since it uses less digits than its factorization.

213020123242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22989593.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 213020123242 its reverse (242321020312), we get a palindrome (455341143554).

The spelling of 213020123242 in words is "two hundred thirteen billion, twenty million, one hundred twenty-three thousand, two hundred forty-two".