2100121101202 has 4 divisors (see below), whose sum is σ = 3150181651806. Its totient is φ = 1050060550600.

The previous prime is 2100121101181. The next prime is 2100121101229. The reversal of 2100121101202 is 2021011210012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2088686862441 + 11434238761 = 1445229^2 + 106931^2 .

It is a super-2 number, since 2×2100121101202² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525030275299 + ... + 525030275302.

Almost surely, 2^{2100121101202} is an apocalyptic number.

2100121101202 is a deficient number, since it is larger than the sum of its proper divisors (1050060550604).

2100121101202 is a wasteful number, since it uses less digits than its factorization.

2100121101202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050060550603.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2100121101202 its reverse (2021011210012), we get a palindrome (4121132311214).

The spelling of 2100121101202 in words is "two trillion, one hundred billion, one hundred twenty-one million, one hundred one thousand, two hundred two".