211120022121210 has 48 divisors (see below), whose sum is σ = 548958495613320. Its totient is φ = 56293909683840.

The previous prime is 211120022121193. The next prime is 211120022121227. The reversal of 211120022121210 is 12121220021112.

211120022121210 is a `hidden beast` number, since 2 + 1 + 11 + 200 + 221 + 21 + 210 = 666.

It is an interprime number because it is at equal distance from previous prime (211120022121193) and next prime (211120022121227).

It can be written as a sum of positive squares in 4 ways, for example, as 161292108206889 + 49827913914321 = 12700083^2 + 7058889^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98156905 + ... + 100284684.

Almost surely, 2^{211120022121210} is an apocalyptic number.

211120022121210 is an abundant number, since it is smaller than the sum of its proper divisors (337838473492110).

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

211120022121210 is a wasteful number, since it uses less digits than its factorization.

211120022121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198453423 (or 198453420 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211120022121210 its reverse (12121220021112), we get a palindrome (223241242142322).

The spelling of 211120022121210 in words is "two hundred eleven trillion, one hundred twenty billion, twenty-two million, one hundred twenty-one thousand, two hundred ten".