2101011100002 has 48 divisors (see below), whose sum is σ = 4721047050720. Its totient is φ = 700298955072.

The previous prime is 2101011099997. The next prime is 2101011100043. The reversal of 2101011100002 is 2000011101012.

It is a happy number.

It is a super-2 number, since 2×2101011100002² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9667449 + ... + 9882387.

It is an arithmetic number, because the mean of its divisors is an integer number (98355146890).

Almost surely, 2^{2101011100002} is an apocalyptic number.

2101011100002 is an abundant number, since it is smaller than the sum of its proper divisors (2620035950718).

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

2101011100002 is a wasteful number, since it uses less digits than its factorization.

2101011100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235069 (or 235057 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 2101011100002 its reverse (2000011101012), we get a palindrome (4101022201014).

The spelling of 2101011100002 in words is "two trillion, one hundred one billion, eleven million, one hundred thousand, two".