211212122210012 has 24 divisors (see below), whose sum is σ = 460826448458880. Its totient is φ = 82290437224560.

The previous prime is 211212122209987. The next prime is 211212122210027. The reversal of 211212122210012 is 210012221212112.

It is a super-2 number, since 2×211212122210012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 342876821462 + ... + 342876822077.

It is an arithmetic number, because the mean of its divisors is an integer number (19201102019120).

Almost surely, 2^{211212122210012} is an apocalyptic number.

211212122210012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211212122210012 is an abundant number, since it is smaller than the sum of its proper divisors (249614326248868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211212122210012 is a wasteful number, since it uses less digits than its factorization.

211212122210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685753643561 (or 685753643559 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211212122210012 its reverse (210012221212112), we get a palindrome (421224343422124).

The spelling of 211212122210012 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred twenty-two million, two hundred ten thousand, twelve".