1121210121021 has 8 divisors (see below), whose sum is σ = 1494951758880. Its totient is φ = 747470948592.

The previous prime is 1121210120941. The next prime is 1121210121029. The reversal of 1121210121021 is 1201210121211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121210121021 - 2³³ = 1112620186429 is a prime.

It is a super-2 number, since 2×1121210121021² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121210121029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1266235 + ... + 1961063.

It is an arithmetic number, because the mean of its divisors is an integer number (186868969860).

Almost surely, 2^{1121210121021} is an apocalyptic number.

It is an amenable number.

1121210121021 is a deficient number, since it is larger than the sum of its proper divisors (373741637859).

1121210121021 is an equidigital number, since it uses as much as digits as its factorization.

1121210121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232715.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1121210121021 its reverse (1201210121211), we get a palindrome (2322420242232).

The spelling of 1121210121021 in words is "one trillion, one hundred twenty-one billion, two hundred ten million, one hundred twenty-one thousand, twenty-one".