210011121211000 has 128 divisors (see below), whose sum is σ = 499972040568000. Its totient is φ = 82544826048000.

The previous prime is 210011121210973. The next prime is 210011121211051. The reversal of 210011121211000 is 112121110012.

It is a happy number.

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, 135460210 + ... + 137001790.

Almost surely, 2^{210011121211000} is an apocalyptic number.

210011121211000 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 210011121211000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249986020284000).

210011121211000 is an abundant number, since it is smaller than the sum of its proper divisors (289960919357000).

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

210011121211000 is a wasteful number, since it uses less digits than its factorization.

210011121211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543970 (or 1543956 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210011121211000 its reverse (112121110012), we get a palindrome (210123242321012).

The spelling of 210011121211000 in words is "two hundred ten trillion, eleven billion, one hundred twenty-one million, two hundred eleven thousand".