121001222011120 has 160 divisors (see below), whose sum is σ = 315021729104640. Its totient is φ = 42850422865920.

The previous prime is 121001222011079. The next prime is 121001222011123. The reversal of 121001222011120 is 21110222100121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 121001222011094 and 121001222011103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001222011123) 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, 5334897 + ... + 16445776.

It is an arithmetic number, because the mean of its divisors is an integer number (1968885806904).

Almost surely, 2^{121001222011120} is an apocalyptic number.

121001222011120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001222011120 is an abundant number, since it is smaller than the sum of its proper divisors (194020507093520).

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

121001222011120 is a wasteful number, since it uses less digits than its factorization.

121001222011120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21780863 (or 21780857 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121001222011120 its reverse (21110222100121), we get a palindrome (142111444111241).

The spelling of 121001222011120 in words is "one hundred twenty-one trillion, one billion, two hundred twenty-two million, eleven thousand, one hundred twenty".