221257006450652 has 48 divisors (see below), whose sum is σ = 389125277032800. Its totient is φ = 110079989929728.

The previous prime is 221257006450637. The next prime is 221257006450699. The reversal of 221257006450652 is 256054600752122.

221257006450652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221257006450652² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221257006450597 and 221257006450606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1195251599 + ... + 1195436697.

It is an arithmetic number, because the mean of its divisors is an integer number (8106776604850).

Almost surely, 2^{221257006450652} is an apocalyptic number.

It is an amenable number.

221257006450652 is a deficient number, since it is larger than the sum of its proper divisors (167868270582148).

221257006450652 is a wasteful number, since it uses less digits than its factorization.

221257006450652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187302 (or 187300 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 47.

The spelling of 221257006450652 in words is "two hundred twenty-one trillion, two hundred fifty-seven billion, six million, four hundred fifty thousand, six hundred fifty-two".