1021122044550 has 36 divisors (see below), whose sum is σ = 2743414560900. Its totient is φ = 272299211760.

The previous prime is 1021122044543. The next prime is 1021122044581. The reversal of 1021122044550 is 554402211201.

It is a happy number.

1021122044550 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 1 + 2 + 204 + 455 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1134579600 + ... + 1134580499.

It is an arithmetic number, because the mean of its divisors is an integer number (76205960025).

Almost surely, 2^{1021122044550} is an apocalyptic number.

1021122044550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021122044550 is an abundant number, since it is smaller than the sum of its proper divisors (1722292516350).

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

1021122044550 is a wasteful number, since it uses less digits than its factorization.

1021122044550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2269160117 (or 2269160109 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 1021122044550 its reverse (554402211201), we get a palindrome (1575524255751).

It can be divided in two parts, 10211 and 22044550, that added together give a triangular number (22054761 = T₆₆₄₁).

The spelling of 1021122044550 in words is "one trillion, twenty-one billion, one hundred twenty-two million, forty-four thousand, five hundred fifty".