2221100101020 has 96 divisors (see below), whose sum is σ = 6387651648000. Its totient is φ = 576241392384.

The previous prime is 2221100101019. The next prime is 2221100101021. The reversal of 2221100101020 is 201010011222.

It is an interprime number because it is at equal distance from previous prime (2221100101019) and next prime (2221100101021).

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 = 2221100100987 and 2221100101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221100101021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37175131 + ... + 37234829.

It is an arithmetic number, because the mean of its divisors is an integer number (66538038000).

Almost surely, 2^{2221100101020} is an apocalyptic number.

2221100101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221100101020 is an abundant number, since it is smaller than the sum of its proper divisors (4166551546980).

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

2221100101020 is a wasteful number, since it uses less digits than its factorization.

2221100101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76507 (or 76505 counting only the distinct ones).

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

Adding to 2221100101020 its reverse (201010011222), we get a palindrome (2422110112242).

The spelling of 2221100101020 in words is "two trillion, two hundred twenty-one billion, one hundred million, one hundred one thousand, twenty".