1021224320402 has 48 divisors (see below), whose sum is σ = 1871925914880. Its totient is φ = 413710315200.

The previous prime is 1021224320401. The next prime is 1021224320419. The reversal of 1021224320402 is 2040234221201.

It is a super-2 number, since 2×1021224320402² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021224320401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4627874 + ... + 4843517.

It is an arithmetic number, because the mean of its divisors is an integer number (38998456560).

Almost surely, 2^{1021224320402} is an apocalyptic number.

1021224320402 is a deficient number, since it is larger than the sum of its proper divisors (850701594478).

1021224320402 is a wasteful number, since it uses less digits than its factorization.

1021224320402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9471459 (or 9471446 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 1021224320402 its reverse (2040234221201), we get a palindrome (3061458541603).

The spelling of 1021224320402 in words is "one trillion, twenty-one billion, two hundred twenty-four million, three hundred twenty thousand, four hundred two".