111201001022100 has 144 divisors (see below), whose sum is σ = 352295597263680. Its totient is φ = 26857603276800.

The previous prime is 111201001022051. The next prime is 111201001022171. The reversal of 111201001022100 is 1220100102111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61746637 + ... + 63522036.

It is an arithmetic number, because the mean of its divisors is an integer number (2446497203220).

Almost surely, 2^{111201001022100} is an apocalyptic number.

111201001022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111201001022100 is an abundant number, since it is smaller than the sum of its proper divisors (241094596241580).

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

111201001022100 is a wasteful number, since it uses less digits than its factorization.

111201001022100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125268970 (or 125268963 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111201001022100 its reverse (1220100102111), we get a palindrome (112421101124211).

The spelling of 111201001022100 in words is "one hundred eleven trillion, two hundred one billion, one million, twenty-two thousand, one hundred".