1002121022020 has 24 divisors (see below), whose sum is σ = 2107789282368. Its totient is φ = 400213144800.

The previous prime is 1002121022003. The next prime is 1002121022047. The reversal of 1002121022020 is 202201212001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39691066 + ... + 39716305.

It is an arithmetic number, because the mean of its divisors is an integer number (87824553432).

Almost surely, 2^{1002121022020} is an apocalyptic number.

1002121022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002121022020 is an abundant number, since it is smaller than the sum of its proper divisors (1105668260348).

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

1002121022020 is a wasteful number, since it uses less digits than its factorization.

1002121022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79408011 (or 79408009 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1002121022020 its reverse (202201212001), we get a palindrome (1204322234021).

The spelling of 1002121022020 in words is "one trillion, two billion, one hundred twenty-one million, twenty-two thousand, twenty".