12121101029 has 32 divisors (see below), whose sum is σ = 13123568640. Its totient is φ = 11169446400.

The previous prime is 12121101011. The next prime is 12121101073. The reversal of 12121101029 is 92010112121.

It is a cyclic number.

It is not a de Polignac number, because 12121101029 - 2⁸ = 12121100773 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12121101029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121101229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26522969 + ... + 26523425.

It is an arithmetic number, because the mean of its divisors is an integer number (410111520).

Almost surely, 2^12121101029 is an apocalyptic number.

It is an amenable number.

12121101029 is a deficient number, since it is larger than the sum of its proper divisors (1002467611).

12121101029 is a wasteful number, since it uses less digits than its factorization.

12121101029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 12121101029 in words is "twelve billion, one hundred twenty-one million, one hundred one thousand, twenty-nine".