2002212121020 has 48 divisors (see below), whose sum is σ = 5637167416608. Its totient is φ = 530973377280.

The previous prime is 2002212121009. The next prime is 2002212121027. The reversal of 2002212121020 is 201212122002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002212121027) 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, 92172019 + ... + 92193738.

It is an arithmetic number, because the mean of its divisors is an integer number (117440987846).

Almost surely, 2^{2002212121020} is an apocalyptic number.

2002212121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002212121020 is an abundant number, since it is smaller than the sum of its proper divisors (3634955295588).

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

2002212121020 is a wasteful number, since it uses less digits than its factorization.

2002212121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184365950 (or 184365948 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2002212121020 its reverse (201212122002), we get a palindrome (2203424243022).

The spelling of 2002212121020 in words is "two trillion, two billion, two hundred twelve million, one hundred twenty-one thousand, twenty".