10302120121 has 4 divisors (see below), whose sum is σ = 10306943092. Its totient is φ = 10297297152.

The previous prime is 10302120083. The next prime is 10302120149. The reversal of 10302120121 is 12102120301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5396518521 + 4905601600 = 73461^2 + 70040^2 .

It is a cyclic number.

It is not a de Polignac number, because 10302120121 - 2³¹ = 8154636473 is a prime.

It is a super-2 number, since 2×10302120121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10302123121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2408280 + ... + 2412553.

It is an arithmetic number, because the mean of its divisors is an integer number (2576735773).

Almost surely, 2^10302120121 is an apocalyptic number.

It is an amenable number.

10302120121 is a deficient number, since it is larger than the sum of its proper divisors (4822971).

10302120121 is an equidigital number, since it uses as much as digits as its factorization.

10302120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4822970.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10302120121 its reverse (12102120301), we get a palindrome (22404240422).

The spelling of 10302120121 in words is "ten billion, three hundred two million, one hundred twenty thousand, one hundred twenty-one".