2123211524250 has 128 divisors (see below), whose sum is σ = 5445530228736. Its totient is φ = 550607616000.

The previous prime is 2123211524243. The next prime is 2123211524251. The reversal of 2123211524250 is 524251123212.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2123211524251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57729367 + ... + 57766133.

It is an arithmetic number, because the mean of its divisors is an integer number (42543204912).

Almost surely, 2^{2123211524250} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123211524250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2722765114368).

2123211524250 is an abundant number, since it is smaller than the sum of its proper divisors (3322318704486).

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

2123211524250 is a wasteful number, since it uses less digits than its factorization.

2123211524250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38905 (or 38895 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 2123211524250 its reverse (524251123212), we get a palindrome (2647462647462).

The spelling of 2123211524250 in words is "two trillion, one hundred twenty-three billion, two hundred eleven million, five hundred twenty-four thousand, two hundred fifty".