1121101002021 has 128 divisors (see below), whose sum is σ = 2115015598080. Its totient is φ = 509122944000.

The previous prime is 1121101001987. The next prime is 1121101002037. The reversal of 1121101002021 is 1202001011211.

It is not a de Polignac number, because 1121101002021 - 2⁷ = 1121101001893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121101001988 and 1121101002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121101003021) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6895615 + ... + 7056323.

It is an arithmetic number, because the mean of its divisors is an integer number (16523559360).

Almost surely, 2^{1121101002021} is an apocalyptic number.

1121101002021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121101002021 is a deficient number, since it is larger than the sum of its proper divisors (993914596059).

1121101002021 is a wasteful number, since it uses less digits than its factorization.

1121101002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160867.

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

Adding to 1121101002021 its reverse (1202001011211), we get a palindrome (2323102013232).

The spelling of 1121101002021 in words is "one trillion, one hundred twenty-one billion, one hundred one million, two thousand, twenty-one".