221401613354 has 8 divisors (see below), whose sum is σ = 332104872960. Its totient is φ = 110699989036.

The previous prime is 221401613351. The next prime is 221401613359. The reversal of 221401613354 is 453316104122.

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

It is a super-2 number, since 2×221401613354² (a number of 23 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 221401613354.

It is not an unprimeable number, because it can be changed into a prime (221401613351) 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, 19337 + ... + 665715.

It is an arithmetic number, because the mean of its divisors is an integer number (41513109120).

Almost surely, 2^221401613354 is an apocalyptic number.

221401613354 is a deficient number, since it is larger than the sum of its proper divisors (110703259606).

221401613354 is a wasteful number, since it uses less digits than its factorization.

221401613354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817644.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 221401613354 its reverse (453316104122), we get a palindrome (674717717476).

The spelling of 221401613354 in words is "two hundred twenty-one billion, four hundred one million, six hundred thirteen thousand, three hundred fifty-four".