211120021000000 has 392 divisors, whose sum is σ = 599787287624448. Its totient is φ = 72225888000000.

The previous prime is 211120020999931. The next prime is 211120021000037. The reversal of 211120021000000 is 120021112.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 3226967289 + ... + 3227032711.

Almost surely, 2^{211120021000000} is an apocalyptic number.

211120021000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211120021000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299893643812224).

211120021000000 is an abundant number, since it is smaller than the sum of its proper divisors (388667266624448).

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

211120021000000 is an frugal number, since it uses more digits than its factorization.

211120021000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65933 (or 65898 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 211120021000000 its reverse (120021112), we get a palindrome (211120141021112).

The spelling of 211120021000000 in words is "two hundred eleven trillion, one hundred twenty billion, twenty-one million", and thus it is an aban number.