212202021121012 has 72 divisors (see below), whose sum is σ = 418575239699400. Its totient is φ = 93517634472960.

The previous prime is 212202021120967. The next prime is 212202021121039. The reversal of 212202021121012 is 210121120202212.

It can be written as a sum of positive squares in 4 ways, for example, as 14413913392356 + 197788107728656 = 3796566^2 + 14063716^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17819137 + ... + 27238312.

It is an arithmetic number, because the mean of its divisors is an integer number (5813544995825).

Almost surely, 2^{212202021121012} is an apocalyptic number.

It is an amenable number.

212202021121012 is a deficient number, since it is larger than the sum of its proper divisors (206373218578388).

212202021121012 is a wasteful number, since it uses less digits than its factorization.

212202021121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45057601 (or 45057552 counting only the distinct ones).

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

Adding to 212202021121012 its reverse (210121120202212), we get a palindrome (422323141323224).

The spelling of 212202021121012 in words is "two hundred twelve trillion, two hundred two billion, twenty-one million, one hundred twenty-one thousand, twelve".