121011120100220 has 24 divisors (see below), whose sum is σ = 290426688240864. Its totient is φ = 41489526891456.

The previous prime is 121011120100207. The next prime is 121011120100259. The reversal of 121011120100220 is 22001021110121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 121011120100195 and 121011120100204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432182571647 + ... + 432182571926.

It is an arithmetic number, because the mean of its divisors is an integer number (12101112010036).

Almost surely, 2^{121011120100220} is an apocalyptic number.

121011120100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011120100220 is an abundant number, since it is smaller than the sum of its proper divisors (169415568140644).

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

121011120100220 is a wasteful number, since it uses less digits than its factorization.

121011120100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864365143589 (or 864365143587 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121011120100220 its reverse (22001021110121), we get a palindrome (143012141210341).

The spelling of 121011120100220 in words is "one hundred twenty-one trillion, eleven billion, one hundred twenty million, one hundred thousand, two hundred twenty".