1011100202021 has 16 divisors (see below), whose sum is σ = 1245261360000. Its totient is φ = 799457577408.

The previous prime is 1011100201987. The next prime is 1011100202023. The reversal of 1011100202021 is 1202020011101.

It is a de Polignac number, because none of the positive numbers 2^k-1011100202021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011100201993 and 1011100202011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011100202023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3569726 + ... + 3842543.

It is an arithmetic number, because the mean of its divisors is an integer number (77828835000).

Almost surely, 2^{1011100202021} is an apocalyptic number.

It is an amenable number.

1011100202021 is a deficient number, since it is larger than the sum of its proper divisors (234161157979).

1011100202021 is a wasteful number, since it uses less digits than its factorization.

1011100202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7413788.

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

Adding to 1011100202021 its reverse (1202020011101), we get a palindrome (2213120213122).

It can be divided in two parts, 1011100 and 202021, that added together give a palindrome (1213121).

The spelling of 1011100202021 in words is "one trillion, eleven billion, one hundred million, two hundred two thousand, twenty-one".