2652106421221 has 8 divisors (see below), whose sum is σ = 2661563375064. Its totient is φ = 2642656327680.

The previous prime is 2652106421213. The next prime is 2652106421249. The reversal of 2652106421221 is 1221246012562.

It can be written as a sum of positive squares in 4 ways, for example, as 252662049025 + 2399444372196 = 502655^2 + 1549014^2 .

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 2652106421221 - 2³ = 2652106421213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2652106421621) 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, 939900 + ... + 2487493.

It is an arithmetic number, because the mean of its divisors is an integer number (332695421883).

Almost surely, 2^{2652106421221} is an apocalyptic number.

It is an amenable number.

2652106421221 is a deficient number, since it is larger than the sum of its proper divisors (9456953843).

2652106421221 is a wasteful number, since it uses less digits than its factorization.

2652106421221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430151.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 2652106421221 in words is "two trillion, six hundred fifty-two billion, one hundred six million, four hundred twenty-one thousand, two hundred twenty-one".