1021020112272 has 80 divisors (see below), whose sum is σ = 2719908771840. Its totient is φ = 329864716416.

The previous prime is 1021020112271. The next prime is 1021020112297. The reversal of 1021020112272 is 2722110201201.

It is not an unprimeable number, because it can be changed into a prime (1021020112271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1964622 + ... + 2429357.

It is an arithmetic number, because the mean of its divisors is an integer number (33998859648).

Almost surely, 2^{1021020112272} is an apocalyptic number.

1021020112272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021020112272 is an abundant number, since it is smaller than the sum of its proper divisors (1698888659568).

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

1021020112272 is a wasteful number, since it uses less digits than its factorization.

1021020112272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4394140 (or 4394134 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

Adding to 1021020112272 its reverse (2722110201201), we get a palindrome (3743130313473).

The spelling of 1021020112272 in words is "one trillion, twenty-one billion, twenty million, one hundred twelve thousand, two hundred seventy-two".