120202101 has 6 divisors (see below), whose sum is σ = 173625270. Its totient is φ = 80134728.

The previous prime is 120202081. The next prime is 120202123. The reversal of 120202101 is 101202021.

It can be written as a sum of positive squares in only one way, i.e., 62821476 + 57380625 = 7926^2 + 7575^2 .

It is not a de Polignac number, because 120202101 - 2⁹ = 120201589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 13355789 = 120202101 / (1 + 2 + 0 + 2 + 0 + 2 + 1 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120202141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6677886 + ... + 6677903.

It is an arithmetic number, because the mean of its divisors is an integer number (28937545).

Almost surely, 2^120202101 is an apocalyptic number.

It is an amenable number.

120202101 is a deficient number, since it is larger than the sum of its proper divisors (53423169).

120202101 is a wasteful number, since it uses less digits than its factorization.

120202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13355795 (or 13355792 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 120202101 is about 10963.6718757905. The cubic root of 120202101 is about 493.5191617422.

Adding to 120202101 its reverse (101202021), we get a palindrome (221404122).

The spelling of 120202101 in words is "one hundred twenty million, two hundred two thousand, one hundred one".