2002121111020 has 48 divisors (see below), whose sum is σ = 4560355090368. Its totient is φ = 735355811840.

The previous prime is 2002121110999. The next prime is 2002121111041. The reversal of 2002121111020 is 201111212002.

It is an interprime number because it is at equal distance from previous prime (2002121110999) and next prime (2002121111041).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71798152 + ... + 71826031.

It is an arithmetic number, because the mean of its divisors is an integer number (95007397716).

Almost surely, 2^{2002121111020} is an apocalyptic number.

2002121111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002121111020 is an abundant number, since it is smaller than the sum of its proper divisors (2558233979348).

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

2002121111020 is a wasteful number, since it uses less digits than its factorization.

2002121111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143624250 (or 143624248 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2002121111020 its reverse (201111212002), we get a palindrome (2203232323022).

The spelling of 2002121111020 in words is "two trillion, two billion, one hundred twenty-one million, one hundred eleven thousand, twenty".