1020121202320 has 80 divisors (see below), whose sum is σ = 2588186702592. Its totient is φ = 370840135680.

The previous prime is 1020121202311. The next prime is 1020121202323. The reversal of 1020121202320 is 232021210201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1020121202294 and 1020121202303.

It is not an unprimeable number, because it can be changed into a prime (1020121202323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2740489 + ... + 3090391.

Almost surely, 2^{1020121202320} is an apocalyptic number.

1020121202320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020121202320 is an abundant number, since it is smaller than the sum of its proper divisors (1568065500272).

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

1020121202320 is a wasteful number, since it uses less digits than its factorization.

1020121202320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353240 (or 353234 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1020121202320 its reverse (232021210201), we get a palindrome (1252142412521).

The spelling of 1020121202320 in words is "one trillion, twenty billion, one hundred twenty-one million, two hundred two thousand, three hundred twenty".