221202202220101 has 16 divisors (see below), whose sum is σ = 236246079219840. Its totient is φ = 206501544728640.

The previous prime is 221202202219997. The next prime is 221202202220113. The reversal of 221202202220101 is 101022202202122.

It is a cyclic number.

It is not a de Polignac number, because 221202202220101 - 2³³ = 221193612285509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202202220501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39807010 + ... + 45022243.

It is an arithmetic number, because the mean of its divisors is an integer number (14765379951240).

Almost surely, 2^{221202202220101} is an apocalyptic number.

It is an amenable number.

221202202220101 is a deficient number, since it is larger than the sum of its proper divisors (15043876999739).

221202202220101 is a wasteful number, since it uses less digits than its factorization.

221202202220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84831276.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221202202220101 its reverse (101022202202122), we get a palindrome (322224404422223).

The spelling of 221202202220101 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred two million, two hundred twenty thousand, one hundred one".