2100011012200 has 48 divisors (see below), whose sum is σ = 4996072730880. Its totient is φ = 820469415360.

The previous prime is 2100011012179. The next prime is 2100011012213. The reversal of 2100011012200 is 22101100012.

It is a super-2 number, since 2×2100011012200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122085064 + ... + 122102263.

It is an arithmetic number, because the mean of its divisors is an integer number (104084848560).

Almost surely, 2^{2100011012200} is an apocalyptic number.

2100011012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100011012200 is an abundant number, since it is smaller than the sum of its proper divisors (2896061718680).

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

2100011012200 is a wasteful number, since it uses less digits than its factorization.

2100011012200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244187386 (or 244187377 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2100011012200 its reverse (22101100012), we get a palindrome (2122112112212).

The spelling of 2100011012200 in words is "two trillion, one hundred billion, eleven million, twelve thousand, two hundred".