2102120021011 has 12 divisors (see below), whose sum is σ = 2269655273440. Its totient is φ = 1946032018560.

The previous prime is 2102120020999. The next prime is 2102120021069. The reversal of 2102120021011 is 1101200212012.

It is not a de Polignac number, because 2102120021011 - 2⁷ = 2102120020883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102120020982 and 2102120021000.

It is not an unprimeable number, because it can be changed into a prime (2102120021411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59603451 + ... + 59638708.

Almost surely, 2^{2102120021011} is an apocalyptic number.

2102120021011 is a deficient number, since it is larger than the sum of its proper divisors (167535252429).

2102120021011 is a wasteful number, since it uses less digits than its factorization.

2102120021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119242254 (or 119242237 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2102120021011 its reverse (1101200212012), we get a palindrome (3203320233023).

The spelling of 2102120021011 in words is "two trillion, one hundred two billion, one hundred twenty million, twenty-one thousand, eleven".