102021021210002 has 4 divisors (see below), whose sum is σ = 153031531815006. Its totient is φ = 51010510605000.

The previous prime is 102021021209999. The next prime is 102021021210029. The reversal of 102021021210002 is 200012120120201.

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., 93091448888881 + 8929572321121 = 9648391^2 + 2988239^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505255302499 + ... + 25505255302502.

Almost surely, 2^{102021021210002} is an apocalyptic number.

102021021210002 is a deficient number, since it is larger than the sum of its proper divisors (51010510605004).

102021021210002 is an equidigital number, since it uses as much as digits as its factorization.

102021021210002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51010510605003.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102021021210002 its reverse (200012120120201), we get a palindrome (302033141330203).

The spelling of 102021021210002 in words is "one hundred two trillion, twenty-one billion, twenty-one million, two hundred ten thousand, two".