2100021003122 has 16 divisors (see below), whose sum is σ = 3602790463680. Its totient is φ = 899320386768.

The previous prime is 2100021003071. The next prime is 2100021003137. The reversal of 2100021003122 is 2213001200012.

It is a happy number.

It is a super-2 number, since 2×2100021003122² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 2100021003097 and 2100021003106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57365597 + ... + 57402192.

It is an arithmetic number, because the mean of its divisors is an integer number (225174403980).

Almost surely, 2^{2100021003122} is an apocalyptic number.

2100021003122 is a deficient number, since it is larger than the sum of its proper divisors (1502769460558).

2100021003122 is a wasteful number, since it uses less digits than its factorization.

2100021003122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114769105.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2100021003122 its reverse (2213001200012), we get a palindrome (4313022203134).

The spelling of 2100021003122 in words is "two trillion, one hundred billion, twenty-one million, three thousand, one hundred twenty-two".