211212212321200 has 60 divisors (see below), whose sum is σ = 537286595419080. Its totient is φ = 79515185812480.

The previous prime is 211212212321147. The next prime is 211212212321269. The reversal of 211212212321200 is 2123212212112.

It is a super-2 number, since 2×211212212321200² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15530302930 + ... + 15530316529.

It is an arithmetic number, because the mean of its divisors is an integer number (8954776590318).

Almost surely, 2^{211212212321200} is an apocalyptic number.

211212212321200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211212212321200 is an abundant number, since it is smaller than the sum of its proper divisors (326074383097880).

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

211212212321200 is a wasteful number, since it uses less digits than its factorization.

211212212321200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31060619494 (or 31060619483 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 211212212321200 its reverse (2123212212112), we get a palindrome (213335424533312).

The spelling of 211212212321200 in words is "two hundred eleven trillion, two hundred twelve billion, two hundred twelve million, three hundred twenty-one thousand, two hundred".