102001212020 has 24 divisors (see below), whose sum is σ = 214208916768. Its totient is φ = 40799271200.

The previous prime is 102001212011. The next prime is 102001212023. The reversal of 102001212020 is 20212100201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102001211992 and 102001212010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001212023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955115 + ... + 1056525.

It is an arithmetic number, because the mean of its divisors is an integer number (8925371532).

Almost surely, 2^102001212020 is an apocalyptic number.

102001212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102001212020 is an abundant number, since it is smaller than the sum of its proper divisors (112207704748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102001212020 is a wasteful number, since it uses less digits than its factorization.

102001212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151711 (or 151709 counting only the distinct ones).

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

Adding to 102001212020 its reverse (20212100201), we get a palindrome (122213312221).

The spelling of 102001212020 in words is "one hundred two billion, one million, two hundred twelve thousand, twenty".