1210202012101 has 12 divisors (see below), whose sum is σ = 1339525288332. Its totient is φ = 1089491317376.

The previous prime is 1210202012083. The next prime is 1210202012161. The reversal of 1210202012101 is 1012102020121.

It can be written as a sum of positive squares in 2 ways, for example, as 940368515076 + 269833497025 = 969726^2 + 519455^2 .

It is not a de Polignac number, because 1210202012101 - 2¹⁷ = 1210201881029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210202012161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67276786 + ... + 67294771.

It is an arithmetic number, because the mean of its divisors is an integer number (111627107361).

Almost surely, 2^{1210202012101} is an apocalyptic number.

It is an amenable number.

1210202012101 is a deficient number, since it is larger than the sum of its proper divisors (129323276231).

1210202012101 is a wasteful number, since it uses less digits than its factorization.

1210202012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134571620 (or 134571597 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1210202012101 its reverse (1012102020121), we get a palindrome (2222304032222).

The spelling of 1210202012101 in words is "one trillion, two hundred ten billion, two hundred two million, twelve thousand, one hundred one".