1021132353420 has 72 divisors (see below), whose sum is σ = 3097697213520. Its totient is φ = 272278892160.

The previous prime is 1021132353377. The next prime is 1021132353473. The reversal of 1021132353420 is 243532311201.

1021132353420 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 1 + 3 + 235 + 3 + 420 = 666.

It is a super-2 number, since 2×1021132353420² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1945375 + ... + 2413865.

It is an arithmetic number, because the mean of its divisors is an integer number (43023572410).

Almost surely, 2^{1021132353420} is an apocalyptic number.

1021132353420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021132353420 is an abundant number, since it is smaller than the sum of its proper divisors (2076564860100).

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

1021132353420 is a wasteful number, since it uses less digits than its factorization.

1021132353420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480615 (or 480610 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 1021132353420 its reverse (243532311201), we get a palindrome (1264664664621).

The spelling of 1021132353420 in words is "one trillion, twenty-one billion, one hundred thirty-two million, three hundred fifty-three thousand, four hundred twenty".