10202121213 has 4 divisors (see below), whose sum is σ = 13602828288. Its totient is φ = 6801414140.

The previous prime is 10202121203. The next prime is 10202121221. The reversal of 10202121213 is 31212120201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10202121213 - 2²⁴ = 10185343997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10202121192 and 10202121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202121203) 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, 1700353533 + ... + 1700353538.

It is an arithmetic number, because the mean of its divisors is an integer number (3400707072).

Almost surely, 2^10202121213 is an apocalyptic number.

It is an amenable number.

10202121213 is a deficient number, since it is larger than the sum of its proper divisors (3400707075).

10202121213 is an equidigital number, since it uses as much as digits as its factorization.

10202121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400707074.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 10202121213 its reverse (31212120201), we get a palindrome (41414241414).

The spelling of 10202121213 in words is "ten billion, two hundred two million, one hundred twenty-one thousand, two hundred thirteen".