2102220111020 has 24 divisors (see below), whose sum is σ = 4449423358464. Its totient is φ = 834266877696.

The previous prime is 2102220111007. The next prime is 2102220111029. The reversal of 2102220111020 is 201110222012.

It is a super-2 number, since 2×2102220111020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2102220110986 and 2102220111004.

It is not an unprimeable number, because it can be changed into a prime (2102220111029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413820317 + ... + 413825396.

It is an arithmetic number, because the mean of its divisors is an integer number (185392639936).

Almost surely, 2^{2102220111020} is an apocalyptic number.

2102220111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102220111020 is an abundant number, since it is smaller than the sum of its proper divisors (2347203247444).

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

2102220111020 is a wasteful number, since it uses less digits than its factorization.

2102220111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827645849 (or 827645847 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2102220111020 its reverse (201110222012), we get a palindrome (2303330333032).

The spelling of 2102220111020 in words is "two trillion, one hundred two billion, two hundred twenty million, one hundred eleven thousand, twenty".