1011211502250 has 32 divisors (see below), whose sum is σ = 2523983911488. Its totient is φ = 269656400400.

The previous prime is 1011211502227. The next prime is 1011211502297. The reversal of 1011211502250 is 522051121101.

1011211502250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 674140252 + ... + 674141751.

It is an arithmetic number, because the mean of its divisors is an integer number (78874497234).

Almost surely, 2^{1011211502250} is an apocalyptic number.

1011211502250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011211502250 is an abundant number, since it is smaller than the sum of its proper divisors (1512772409238).

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

1011211502250 is a wasteful number, since it uses less digits than its factorization.

1011211502250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348282023 (or 1348282013 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 1011211502250 its reverse (522051121101), we get a palindrome (1533262623351).

The spelling of 1011211502250 in words is "one trillion, eleven billion, two hundred eleven million, five hundred two thousand, two hundred fifty".