2101121101000 has 32 divisors (see below), whose sum is σ = 4916623378680. Its totient is φ = 840448440000.

The previous prime is 2101121100983. The next prime is 2101121101039. The reversal of 2101121101000 is 1011211012.

It can be written as a sum of positive squares in 4 ways, for example, as 765418513924 + 1335702587076 = 874882^2 + 1155726^2 .

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 7 ways as a sum of consecutive naturals, for example, 1050559551 + ... + 1050561550.

Almost surely, 2^{2101121101000} is an apocalyptic number.

2101121101000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101121101000 is an abundant number, since it is smaller than the sum of its proper divisors (2815502277680).

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

2101121101000 is a wasteful number, since it uses less digits than its factorization.

2101121101000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101121122 (or 2101121108 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 2101121101000 its reverse (1011211012), we get a palindrome (2102132312012).

The spelling of 2101121101000 in words is "two trillion, one hundred one billion, one hundred twenty-one million, one hundred one thousand".