2102020100121 has 8 divisors (see below), whose sum is σ = 2802710953504. Its totient is φ = 1401337990080.

The previous prime is 2102020100087. The next prime is 2102020100143. The reversal of 2102020100121 is 1210010202012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2102020100121 - 2²² = 2102015905817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102020100097 and 2102020100106.

It is not an unprimeable number, because it can be changed into a prime (2102020100161) 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, 1602640 + ... + 2602401.

It is an arithmetic number, because the mean of its divisors is an integer number (350338869188).

Almost surely, 2^{2102020100121} is an apocalyptic number.

It is an amenable number.

2102020100121 is a deficient number, since it is larger than the sum of its proper divisors (700690853383).

2102020100121 is a wasteful number, since it uses less digits than its factorization.

2102020100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4371671.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2102020100121 its reverse (1210010202012), we get a palindrome (3312030302133).

The spelling of 2102020100121 in words is "two trillion, one hundred two billion, twenty million, one hundred thousand, one hundred twenty-one".