2002111001220 has 96 divisors (see below), whose sum is σ = 6115864487040. Its totient is φ = 485334415360.

The previous prime is 2002111001197. The next prime is 2002111001243. The reversal of 2002111001220 is 221001112002.

It is an interprime number because it is at equal distance from previous prime (2002111001197) and next prime (2002111001243).

It is a super-2 number, since 2×2002111001220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2002111001196 and 2002111001205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14260726 + ... + 14400434.

It is an arithmetic number, because the mean of its divisors is an integer number (63706921740).

Almost surely, 2^{2002111001220} is an apocalyptic number.

2002111001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002111001220 is an abundant number, since it is smaller than the sum of its proper divisors (4113753485820).

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

2002111001220 is a wasteful number, since it uses less digits than its factorization.

2002111001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161445 (or 161443 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2002111001220 its reverse (221001112002), we get a palindrome (2223112113222).

The spelling of 2002111001220 in words is "two trillion, two billion, one hundred eleven million, one thousand, two hundred twenty".