139020001221121 has 8 divisors (see below), whose sum is σ = 141402837717288. Its totient is φ = 136640513760000.

The previous prime is 139020001221091. The next prime is 139020001221161. The reversal of 139020001221121 is 121122100020931.

It can be written as a sum of positive squares in 4 ways, for example, as 2585664000000 + 136434337221121 = 1608000^2 + 11680511^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 139020001221121 - 2¹⁷ = 139020001090049 is a prime.

It is a super-2 number, since 2×139020001221121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139020001221161) 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, 837175030 + ... + 837341071.

It is an arithmetic number, because the mean of its divisors is an integer number (17675354714661).

Almost surely, 2^{139020001221121} is an apocalyptic number.

It is an amenable number.

139020001221121 is a deficient number, since it is larger than the sum of its proper divisors (2382836496167).

139020001221121 is a wasteful number, since it uses less digits than its factorization.

139020001221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674517523.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 139020001221121 in words is "one hundred thirty-nine trillion, twenty billion, one million, two hundred twenty-one thousand, one hundred twenty-one".