210102120200121 has 32 divisors (see below), whose sum is σ = 298052973674496. Its totient is φ = 131449773672000.

The previous prime is 210102120200081. The next prime is 210102120200123. The reversal of 210102120200121 is 121002021201012.

It is not a de Polignac number, because 210102120200121 - 2⁶ = 210102120200057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210102120200121.

It is not an unprimeable number, because it can be changed into a prime (210102120200123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260410261 + ... + 261215826.

It is an arithmetic number, because the mean of its divisors is an integer number (9314155427328).

Almost surely, 2^{210102120200121} is an apocalyptic number.

It is an amenable number.

210102120200121 is a deficient number, since it is larger than the sum of its proper divisors (87950853474375).

210102120200121 is a wasteful number, since it uses less digits than its factorization.

210102120200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521626253.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210102120200121 its reverse (121002021201012), we get a palindrome (331104141401133).

The spelling of 210102120200121 in words is "two hundred ten trillion, one hundred two billion, one hundred twenty million, two hundred thousand, one hundred twenty-one".