210122152 has 8 divisors (see below), whose sum is σ = 393979050. Its totient is φ = 105061072.

The previous prime is 210122141. The next prime is 210122153. The reversal of 210122152 is 251221012.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 119377476 + 90744676 = 10926^2 + 9526^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×210122152² = 88302637522222208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210122153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13132627 + ... + 13132642.

Almost surely, 2^210122152 is an apocalyptic number.

It is an amenable number.

210122152 is a deficient number, since it is larger than the sum of its proper divisors (183856898).

210122152 is a wasteful number, since it uses less digits than its factorization.

210122152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26265275 (or 26265271 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 210122152 is about 14495.5907778883. The cubic root of 210122152 is about 594.5074208671.

Adding to 210122152 its reverse (251221012), we get a palindrome (461343164).

The spelling of 210122152 in words is "two hundred ten million, one hundred twenty-two thousand, one hundred fifty-two".