1021220310000 has 200 divisors, whose sum is σ = 3596330605824. Its totient is φ = 247568480000.

The previous prime is 1021220309971. The next prime is 1021220310023. The reversal of 1021220310000 is 130221201.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×1021220310000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1217304 + ... + 1877303.

Almost surely, 2^{1021220310000} is an apocalyptic number.

1021220310000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021220310000 is an abundant number, since it is smaller than the sum of its proper divisors (2575110295824).

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

1021220310000 is a wasteful number, since it uses less digits than its factorization.

1021220310000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3094649 (or 3094628 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1021220310000 its reverse (130221201), we get a palindrome (1021350531201).

The spelling of 1021220310000 in words is "one trillion, twenty-one billion, two hundred twenty million, three hundred ten thousand".