211021212300000 has 144 divisors (see below), whose sum is σ = 692369039389104. Its totient is φ = 56272323200000.

The previous prime is 211021212299987. The next prime is 211021212300001. The reversal of 211021212300000 is 3212120112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211021212300001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 351402021 + ... + 352002020.

It is an arithmetic number, because the mean of its divisors is an integer number (4808118329091).

Almost surely, 2^{211021212300000} is an apocalyptic number.

211021212300000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211021212300000 is an abundant number, since it is smaller than the sum of its proper divisors (481347827089104).

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

211021212300000 is an frugal number, since it uses more digits than its factorization.

211021212300000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703404079 (or 703404051 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 211021212300000 its reverse (3212120112), we get a palindrome (211024424420112).

The spelling of 211021212300000 in words is "two hundred eleven trillion, twenty-one billion, two hundred twelve million, three hundred thousand".