102121012202002 has 4 divisors (see below), whose sum is σ = 153181518303006. Its totient is φ = 51060506101000.

The previous prime is 102121012201997. The next prime is 102121012202017. The reversal of 102121012202002 is 200202210121201.

It is a happy number.

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., 54817305784641 + 47303706417361 = 7403871^2 + 6877769^2 .

It is a super-2 number, since 2×102121012202002² (a number of 29 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 25530253050499 + ... + 25530253050502.

Almost surely, 2^{102121012202002} is an apocalyptic number.

102121012202002 is a deficient number, since it is larger than the sum of its proper divisors (51060506101004).

102121012202002 is an equidigital number, since it uses as much as digits as its factorization.

102121012202002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51060506101003.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102121012202002 its reverse (200202210121201), we get a palindrome (302323222323203).

The spelling of 102121012202002 in words is "one hundred two trillion, one hundred twenty-one billion, twelve million, two hundred two thousand, two".