2113111021400 has 24 divisors (see below), whose sum is σ = 4912983125220. Its totient is φ = 845244408480.

The previous prime is 2113111021391. The next prime is 2113111021409. The reversal of 2113111021400 is 41201113112.

It is an interprime number because it is at equal distance from previous prime (2113111021391) and next prime (2113111021409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113111021409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5282777354 + ... + 5282777753.

Almost surely, 2^{2113111021400} is an apocalyptic number.

2113111021400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2113111021400 is an abundant number, since it is smaller than the sum of its proper divisors (2799872103820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2113111021400 is a wasteful number, since it uses less digits than its factorization.

2113111021400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10565555123 (or 10565555114 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2113111021400 its reverse (41201113112), we get a palindrome (2154312134512).

The spelling of 2113111021400 in words is "two trillion, one hundred thirteen billion, one hundred eleven million, twenty-one thousand, four hundred".