111021220121012 has 48 divisors (see below), whose sum is σ = 199221517716480. Its totient is φ = 54110339580000.

The previous prime is 111021220121011. The next prime is 111021220121029. The reversal of 111021220121012 is 210121022120111.

It is a super-2 number, since 2×111021220121012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111021220121011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1178284439 + ... + 1178378657.

It is an arithmetic number, because the mean of its divisors is an integer number (4150448285760).

Almost surely, 2^{111021220121012} is an apocalyptic number.

It is an amenable number.

111021220121012 is a deficient number, since it is larger than the sum of its proper divisors (88200297595468).

111021220121012 is a wasteful number, since it uses less digits than its factorization.

111021220121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119492 (or 119490 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111021220121012 its reverse (210121022120111), we get a palindrome (321142242241123).

The spelling of 111021220121012 in words is "one hundred eleven trillion, twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, twelve".