2101121002 has 8 divisors (see below), whose sum is σ = 3153250116. Its totient is φ = 1050037632.

The previous prime is 2101120991. The next prime is 2101121017. The reversal of 2101121002 is 2001211012.

It can be written as a sum of positive squares in 2 ways, for example, as 1649090881 + 452030121 = 40609^2 + 21261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2101121002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256393 + ... + 264460.

Almost surely, 2^2101121002 is an apocalyptic number.

2101121002 is a deficient number, since it is larger than the sum of its proper divisors (1052129114).

2101121002 is a wasteful number, since it uses less digits than its factorization.

2101121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522872.

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

The square root of 2101121002 is about 45837.9864522865. The cubic root of 2101121002 is about 1280.8069866457.

Adding to 2101121002 its reverse (2001211012), we get a palindrome (4102332014).

The spelling of 2101121002 in words is "two billion, one hundred one million, one hundred twenty-one thousand, two".