212100012021022 has 4 divisors (see below), whose sum is σ = 318150018031536. Its totient is φ = 106050006010510.

The previous prime is 212100012020993. The next prime is 212100012021031. The reversal of 212100012021022 is 220120210001212.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 212100012020987 and 212100012021005.

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, 53025003005254 + ... + 53025003005257.

It is an arithmetic number, because the mean of its divisors is an integer number (79537504507884).

Almost surely, 2^{212100012021022} is an apocalyptic number.

212100012021022 is a deficient number, since it is larger than the sum of its proper divisors (106050006010514).

212100012021022 is a wasteful number, since it uses less digits than its factorization.

212100012021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106050006010513.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212100012021022 its reverse (220120210001212), we get a palindrome (432220222022234).

The spelling of 212100012021022 in words is "two hundred twelve trillion, one hundred billion, twelve million, twenty-one thousand, twenty-two".