2122121211000 has 128 divisors (see below), whose sum is σ = 7566877992960. Its totient is φ = 485056272000.

The previous prime is 2122121210987. The next prime is 2122121211029. The reversal of 2122121211000 is 1121212212.

It is a super-2 number, since 2×2122121211000² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50505696 + ... + 50547695.

It is an arithmetic number, because the mean of its divisors is an integer number (59116234320).

Almost surely, 2^{2122121211000} is an apocalyptic number.

2122121211000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122121211000 is an abundant number, since it is smaller than the sum of its proper divisors (5444756781960).

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

2122121211000 is a wasteful number, since it uses less digits than its factorization.

2122121211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101053422 (or 101053408 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2122121211000 its reverse (1121212212), we get a palindrome (2123242423212).

The spelling of 2122121211000 in words is "two trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred eleven thousand".