21120001202113 has 32 divisors (see below), whose sum is σ = 25835900590080. Its totient is φ = 17026927484160.

The previous prime is 21120001202029. The next prime is 21120001202117. The reversal of 21120001202113 is 31120210002112.

It is not a de Polignac number, because 21120001202113 - 2⁹ = 21120001201601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21120001202117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36357253 + ... + 36933586.

It is an arithmetic number, because the mean of its divisors is an integer number (807371893440).

Almost surely, 2^{21120001202113} is an apocalyptic number.

21120001202113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21120001202113 is a deficient number, since it is larger than the sum of its proper divisors (4715899387967).

21120001202113 is a wasteful number, since it uses less digits than its factorization.

21120001202113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73290957.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21120001202113 its reverse (31120210002112), we get a palindrome (52240211204225).

The spelling of 21120001202113 in words is "twenty-one trillion, one hundred twenty billion, one million, two hundred two thousand, one hundred thirteen".