212121110220022 has 4 divisors (see below), whose sum is σ = 318181665330036. Its totient is φ = 106060555110010.

The previous prime is 212121110220017. The next prime is 212121110220053. The reversal of 212121110220022 is 220022011121212.

212121110220022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53030277555004 + ... + 53030277555007.

It is an arithmetic number, because the mean of its divisors is an integer number (79545416332509).

Almost surely, 2^{212121110220022} is an apocalyptic number.

212121110220022 is a deficient number, since it is larger than the sum of its proper divisors (106060555110014).

212121110220022 is a wasteful number, since it uses less digits than its factorization.

212121110220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106060555110013.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212121110220022 its reverse (220022011121212), we get a palindrome (432143121341234).

The spelling of 212121110220022 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred ten million, two hundred twenty thousand, twenty-two".