1121010021021 has 32 divisors (see below), whose sum is σ = 1665399730176. Its totient is φ = 664886024000.

The previous prime is 1121010020947. The next prime is 1121010021097. The reversal of 1121010021021 is 1201200101211.

It is a de Polignac number, because none of the positive numbers 2^k-1121010021021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1121010020988 and 1121010021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121010022021) 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, 22838776 + ... + 22887806.

It is an arithmetic number, because the mean of its divisors is an integer number (52043741568).

Almost surely, 2^{1121010021021} is an apocalyptic number.

1121010021021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121010021021 is a deficient number, since it is larger than the sum of its proper divisors (544389709155).

1121010021021 is a wasteful number, since it uses less digits than its factorization.

1121010021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63833.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1121010021021 its reverse (1201200101211), we get a palindrome (2322210122232).

The spelling of 1121010021021 in words is "one trillion, one hundred twenty-one billion, ten million, twenty-one thousand, twenty-one".