201220021113 has 128 divisors (see below), whose sum is σ = 308948828160. Its totient is φ = 115893504000.

The previous prime is 201220021109. The next prime is 201220021117. The reversal of 201220021113 is 311120022102.

It is an interprime number because it is at equal distance from previous prime (201220021109) and next prime (201220021117).

It is not a de Polignac number, because 201220021113 - 2² = 201220021109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201220021092 and 201220021101.

It is not an unprimeable number, because it can be changed into a prime (201220021117) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 726425931 + ... + 726426207.

It is an arithmetic number, because the mean of its divisors is an integer number (2413662720).

Almost surely, 2^201220021113 is an apocalyptic number.

It is an amenable number.

201220021113 is a deficient number, since it is larger than the sum of its proper divisors (107728807047).

201220021113 is a wasteful number, since it uses less digits than its factorization.

201220021113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679.

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

Adding to 201220021113 its reverse (311120022102), we get a palindrome (512340043215).

The spelling of 201220021113 in words is "two hundred one billion, two hundred twenty million, twenty-one thousand, one hundred thirteen".