210101222212111 has 4 divisors (see below), whose sum is σ = 210101401162800. Its totient is φ = 210101043261424.

The previous prime is 210101222212081. The next prime is 210101222212121. The reversal of 210101222212111 is 111212222101012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210101222212111 - 2²⁷ = 210101087994383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210101222212121) 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, 87702526 + ... + 90066283.

It is an arithmetic number, because the mean of its divisors is an integer number (52525350290700).

Almost surely, 2^{210101222212111} is an apocalyptic number.

210101222212111 is a deficient number, since it is larger than the sum of its proper divisors (178950689).

210101222212111 is a wasteful number, since it uses less digits than its factorization.

210101222212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178950688.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 210101222212111 its reverse (111212222101012), we get a palindrome (321313444313123).

The spelling of 210101222212111 in words is "two hundred ten trillion, one hundred one billion, two hundred twenty-two million, two hundred twelve thousand, one hundred eleven".