102021020102 has 16 divisors (see below), whose sum is σ = 153935616240. Its totient is φ = 50709832032.

The previous prime is 102021020099. The next prime is 102021020161. The reversal of 102021020102 is 201020120201.

It is a happy number.

It is a congruent number.

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, 128513 + ... + 469635.

It is an arithmetic number, because the mean of its divisors is an integer number (9620976015).

Almost surely, 2^102021020102 is an apocalyptic number.

102021020102 is a deficient number, since it is larger than the sum of its proper divisors (51914596138).

102021020102 is a wasteful number, since it uses less digits than its factorization.

102021020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342007.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 102021020102 its reverse (201020120201), we get a palindrome (303041140303).

The spelling of 102021020102 in words is "one hundred two billion, twenty-one million, twenty thousand, one hundred two".