1021100202011 has 16 divisors (see below), whose sum is σ = 1089631401984. Its totient is φ = 954636269664.

The previous prime is 1021100202007. The next prime is 1021100202029. The reversal of 1021100202011 is 1102020011201.

It is not a de Polignac number, because 1021100202011 - 2² = 1021100202007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021100201983 and 1021100202001.

It is not an unprimeable number, because it can be changed into a prime (1021100202071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167525 + ... + 1438841.

It is an arithmetic number, because the mean of its divisors is an integer number (68101962624).

Almost surely, 2^{1021100202011} is an apocalyptic number.

1021100202011 is a deficient number, since it is larger than the sum of its proper divisors (68531199973).

1021100202011 is a wasteful number, since it uses less digits than its factorization.

1021100202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272130.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1021100202011 its reverse (1102020011201), we get a palindrome (2123120213212).

The spelling of 1021100202011 in words is "one trillion, twenty-one billion, one hundred million, two hundred two thousand, eleven".