2101121022012 has 96 divisors (see below), whose sum is σ = 5580476052480. Its totient is φ = 611194890240.

The previous prime is 2101121021971. The next prime is 2101121022017. The reversal of 2101121022012 is 2102201211012.

It is a junction number, because it is equal to n+sod(n) for n = 2101121021982 and 2101121022000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101121022017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5584689 + ... + 5949032.

It is an arithmetic number, because the mean of its divisors is an integer number (58129958880).

Almost surely, 2^{2101121022012} is an apocalyptic number.

It is an amenable number.

2101121022012 is an abundant number, since it is smaller than the sum of its proper divisors (3479355030468).

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

2101121022012 is a wasteful number, since it uses less digits than its factorization.

2101121022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11533811 (or 11533809 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2101121022012 its reverse (2102201211012), we get a palindrome (4203322233024).

The spelling of 2101121022012 in words is "two trillion, one hundred one billion, one hundred twenty-one million, twenty-two thousand, twelve".