1231121042299 has 16 divisors (see below), whose sum is σ = 1241197344000. Its totient is φ = 1221087045024.

The previous prime is 1231121042267. The next prime is 1231121042303. The reversal of 1231121042299 is 9922401211321.

It is a cyclic number.

It is not a de Polignac number, because 1231121042299 - 2⁵ = 1231121042267 is a prime.

It is a super-2 number, since 2×1231121042299² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231121042209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252431649 + ... + 252436525.

It is an arithmetic number, because the mean of its divisors is an integer number (77574834000).

Almost surely, 2^{1231121042299} is an apocalyptic number.

1231121042299 is a deficient number, since it is larger than the sum of its proper divisors (10076301701).

1231121042299 is a wasteful number, since it uses less digits than its factorization.

1231121042299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8802.

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 1231121042299 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-one million, forty-two thousand, two hundred ninety-nine".