1120001010021 has 48 divisors (see below), whose sum is σ = 1632264192000. Its totient is φ = 740018210976.

The previous prime is 1120001010017. The next prime is 1120001010067. The reversal of 1120001010021 is 1200101000211.

It is a happy number.

It is not a de Polignac number, because 1120001010021 - 2² = 1120001010017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1120001009985 and 1120001010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120001010091) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 673481436 + ... + 673483098.

It is an arithmetic number, because the mean of its divisors is an integer number (34005504000).

Almost surely, 2^{1120001010021} is an apocalyptic number.

It is an amenable number.

1120001010021 is a deficient number, since it is larger than the sum of its proper divisors (512263181979).

1120001010021 is a wasteful number, since it uses less digits than its factorization.

1120001010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110 (or 3107 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1120001010021 its reverse (1200101000211), we get a palindrome (2320102010232).

The spelling of 1120001010021 in words is "one trillion, one hundred twenty billion, one million, ten thousand, twenty-one".