20012020102 has 4 divisors (see below), whose sum is σ = 30018030156. Its totient is φ = 10006010050.

The previous prime is 20012020057. The next prime is 20012020103. The reversal of 20012020102 is 20102021002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012020103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003005024 + ... + 5003005027.

It is an arithmetic number, because the mean of its divisors is an integer number (7504507539).

Almost surely, 2^20012020102 is an apocalyptic number.

20012020102 is a deficient number, since it is larger than the sum of its proper divisors (10006010054).

20012020102 is a wasteful number, since it uses less digits than its factorization.

20012020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006010053.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20012020102 its reverse (20102021002), we get a palindrome (40114041104).

The spelling of 20012020102 in words is "twenty billion, twelve million, twenty thousand, one hundred two".