1101212450 has 90 divisors (see below), whose sum is σ = 2341150659. Its totient is φ = 385201440.

The previous prime is 1101212407. The next prime is 1101212471. The reversal of 1101212450 is 542121011.

It can be written as a sum of positive squares in 5 ways, for example, as 68939809 + 1032272641 = 8303^2 + 32129^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=23465.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 57958541 + ... + 57958559.

Almost surely, 2^1101212450 is an apocalyptic number.

1101212450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1101212450 is an abundant number, since it is smaller than the sum of its proper divisors (1239938209).

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

1101212450 is an frugal number, since it uses more digits than its factorization.

1101212450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1101212450 is about 33184.5212410847. The cubic root of 1101212450 is about 1032.6592452935.

Adding to 1101212450 its reverse (542121011), we get a palindrome (1643333461).

The spelling of 1101212450 in words is "one billion, one hundred one million, two hundred twelve thousand, four hundred fifty".