213120051 has 8 divisors (see below), whose sum is σ = 285057744. Its totient is φ = 141631200.

The previous prime is 213120029. The next prime is 213120107. The reversal of 213120051 is 150021312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213120051 - 2¹⁵ = 213087283 is a prime.

It is a super-2 number, since 2×213120051² = 90840312276485202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213120051.

It is not an unprimeable number, because it can be changed into a prime (213120151) 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, 111100 + ... + 113001.

It is an arithmetic number, because the mean of its divisors is an integer number (35632218).

Almost surely, 2^213120051 is an apocalyptic number.

213120051 is a deficient number, since it is larger than the sum of its proper divisors (71937693).

213120051 is a wasteful number, since it uses less digits than its factorization.

213120051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224421.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 213120051 is about 14598.6318194549. The cubic root of 213120051 is about 597.3214405486.

Adding to 213120051 its reverse (150021312), we get a palindrome (363141363).

The spelling of 213120051 in words is "two hundred thirteen million, one hundred twenty thousand, fifty-one".