210220111211100 has 36 divisors (see below), whose sum is σ = 608236855104984. Its totient is φ = 56058696322880.

The previous prime is 210220111211059. The next prime is 210220111211137. The reversal of 210220111211100 is 1112111022012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 210220111211100.

It is a congruent number.

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, 350366851719 + ... + 350366852318.

Almost surely, 2^{210220111211100} is an apocalyptic number.

210220111211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210220111211100 is an abundant number, since it is smaller than the sum of its proper divisors (398016743893884).

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

210220111211100 is a wasteful number, since it uses less digits than its factorization.

210220111211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700733704054 (or 700733704047 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210220111211100 its reverse (1112111022012), we get a palindrome (211332222233112).

The spelling of 210220111211100 in words is "two hundred ten trillion, two hundred twenty billion, one hundred eleven million, two hundred eleven thousand, one hundred".