10202221222221 has 32 divisors (see below), whose sum is σ = 16100632977408. Its totient is φ = 5625438094080.

The previous prime is 10202221222199. The next prime is 10202221222231. The reversal of 10202221222221 is 12222212220201.

10202221222221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10202221222221 - 2⁶ = 10202221222157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202221222231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72722860 + ... + 72863013.

It is an arithmetic number, because the mean of its divisors is an integer number (503144780544).

Almost surely, 2^{10202221222221} is an apocalyptic number.

It is an amenable number.

10202221222221 is a deficient number, since it is larger than the sum of its proper divisors (5898411755187).

10202221222221 is a wasteful number, since it uses less digits than its factorization.

10202221222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145586001.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 10202221222221 its reverse (12222212220201), we get a palindrome (22424433442422).

The spelling of 10202221222221 in words is "ten trillion, two hundred two billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-one".