3121221411029 has 4 divisors (see below), whose sum is σ = 3121232907276. Its totient is φ = 3121209914784.

The previous prime is 3121221411019. The next prime is 3121221411037. The reversal of 3121221411029 is 9201141221213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2292202056004 + 829019355025 = 1514002^2 + 910505^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121221411029 - 2⁴ = 3121221411013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121221410992 and 3121221411010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121221411019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5330774 + ... + 5887239.

It is an arithmetic number, because the mean of its divisors is an integer number (780308226819).

Almost surely, 2^{3121221411029} is an apocalyptic number.

It is an amenable number.

3121221411029 is a deficient number, since it is larger than the sum of its proper divisors (11496247).

3121221411029 is a wasteful number, since it uses less digits than its factorization.

3121221411029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11496246.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 3121221411029 in words is "three trillion, one hundred twenty-one billion, two hundred twenty-one million, four hundred eleven thousand, twenty-nine".