10201213121 has 16 divisors (see below), whose sum is σ = 11500597248. Its totient is φ = 8964507600.

The previous prime is 10201213117. The next prime is 10201213237. The reversal of 10201213121 is 12131210201.

It is a cyclic number.

It is not a de Polignac number, because 10201213121 - 2² = 10201213117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10201213096 and 10201213105.

It is not an unprimeable number, because it can be changed into a prime (10201213921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292796 + ... + 325778.

It is an arithmetic number, because the mean of its divisors is an integer number (718787328).

Almost surely, 2^10201213121 is an apocalyptic number.

10201213121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10201213121 is a deficient number, since it is larger than the sum of its proper divisors (1299384127).

10201213121 is a wasteful number, since it uses less digits than its factorization.

10201213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33932.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10201213121 its reverse (12131210201), we get a palindrome (22332423322).

It can be divided in two parts, 10201 and 213121, that added together give a palindrome (223322).

The spelling of 10201213121 in words is "ten billion, two hundred one million, two hundred thirteen thousand, one hundred twenty-one".