1122121002021 has 4 divisors (see below), whose sum is σ = 1496161336032. Its totient is φ = 748080668012.

The previous prime is 1122121002011. The next prime is 1122121002059. The reversal of 1122121002021 is 1202001212211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1122121002021 - 2²¹ = 1122118904869 is a prime.

It is a super-2 number, since 2×1122121002021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122121002011) 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 3 ways as a sum of consecutive naturals, for example, 187020167001 + ... + 187020167006.

It is an arithmetic number, because the mean of its divisors is an integer number (374040334008).

Almost surely, 2^{1122121002021} is an apocalyptic number.

It is an amenable number.

1122121002021 is a deficient number, since it is larger than the sum of its proper divisors (374040334011).

1122121002021 is an equidigital number, since it uses as much as digits as its factorization.

1122121002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374040334010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1122121002021 its reverse (1202001212211), we get a palindrome (2324122214232).

The spelling of 1122121002021 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, two thousand, twenty-one".