20212202111212 has 24 divisors (see below), whose sum is σ = 36199733900400. Its totient is φ = 9872157182976.

The previous prime is 20212202111209. The next prime is 20212202111237. The reversal of 20212202111212 is 21211120221202.

It is a super-2 number, since 2×20212202111212² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20212202111212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341993637 + ... + 342052732.

It is an arithmetic number, because the mean of its divisors is an integer number (1508322245850).

Almost surely, 2^{20212202111212} is an apocalyptic number.

It is an amenable number.

20212202111212 is a deficient number, since it is larger than the sum of its proper divisors (15987531789188).

20212202111212 is a wasteful number, since it uses less digits than its factorization.

20212202111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684046545 (or 684046543 counting only the distinct ones).

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

Adding to 20212202111212 its reverse (21211120221202), we get a palindrome (41423322332414).

The spelling of 20212202111212 in words is "twenty trillion, two hundred twelve billion, two hundred two million, one hundred eleven thousand, two hundred twelve".