102020020120001 has 4 divisors (see below), whose sum is σ = 103456921811904. Its totient is φ = 100583118428100.

The previous prime is 102020020119991. The next prime is 102020020120003. The reversal of 102020020120001 is 100021020020201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102020020120001 - 2²² = 102020015925697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102020020120003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718450845845 + ... + 718450845986.

It is an arithmetic number, because the mean of its divisors is an integer number (25864230452976).

Almost surely, 2^{102020020120001} is an apocalyptic number.

It is an amenable number.

102020020120001 is a deficient number, since it is larger than the sum of its proper divisors (1436901691903).

102020020120001 is an equidigital number, since it uses as much as digits as its factorization.

102020020120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436901691902.

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

Adding to 102020020120001 its reverse (100021020020201), we get a palindrome (202041040140202).

The spelling of 102020020120001 in words is "one hundred two trillion, twenty billion, twenty million, one hundred twenty thousand, one".