10211121019950 has 48 divisors (see below), whose sum is σ = 25353129550320. Its totient is φ = 2719788248320.

The previous prime is 10211121019877. The next prime is 10211121019951. The reversal of 10211121019950 is 5991012111201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211121019951) 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, 39587985 + ... + 39845084.

It is an arithmetic number, because the mean of its divisors is an integer number (528190198965).

Almost surely, 2^{10211121019950} is an apocalyptic number.

10211121019950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10211121019950 is an abundant number, since it is smaller than the sum of its proper divisors (15142008530370).

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

10211121019950 is a wasteful number, since it uses less digits than its factorization.

10211121019950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79433941 (or 79433936 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 33.

The spelling of 10211121019950 in words is "ten trillion, two hundred eleven billion, one hundred twenty-one million, nineteen thousand, nine hundred fifty".