221421255572102 has 8 divisors (see below), whose sum is σ = 332132056736256. Its totient is φ = 110710569993352.

The previous prime is 221421255572093. The next prime is 221421255572269. The reversal of 221421255572102 is 201275552124122.

It is a happy number.

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

It is a super-2 number, since 2×221421255572102² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221421255572102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23936993 + ... + 31871964.

It is an arithmetic number, because the mean of its divisors is an integer number (41516507092032).

Almost surely, 2^{221421255572102} is an apocalyptic number.

221421255572102 is a deficient number, since it is larger than the sum of its proper divisors (110710801164154).

221421255572102 is a wasteful number, since it uses less digits than its factorization.

221421255572102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57792702.

The product of its (nonzero) digits is 224000, while the sum is 41.

The spelling of 221421255572102 in words is "two hundred twenty-one trillion, four hundred twenty-one billion, two hundred fifty-five million, five hundred seventy-two thousand, one hundred two".