111021202121012 has 12 divisors (see below), whose sum is σ = 194302144996260. Its totient is φ = 55506303550656.

The previous prime is 111021202120979. The next prime is 111021202121087. The reversal of 111021202121012 is 210121202120111.

It can be written as a sum of positive squares in 2 ways, for example, as 24403856880676 + 86617345240336 = 4940026^2 + 9306844^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074319337 + ... + 1074422672.

It is an arithmetic number, because the mean of its divisors is an integer number (16191845416355).

Almost surely, 2^{111021202121012} is an apocalyptic number.

It is an amenable number.

111021202121012 is a deficient number, since it is larger than the sum of its proper divisors (83280942875248).

111021202121012 is a wasteful number, since it uses less digits than its factorization.

111021202121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148754930 (or 2148754928 counting only the distinct ones).

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

Adding to 111021202121012 its reverse (210121202120111), we get a palindrome (321142404241123).

Subtracting 111021202121012 from its reverse (210121202120111), we obtain a palindrome (99099999999099).

The spelling of 111021202121012 in words is "one hundred eleven trillion, twenty-one billion, two hundred two million, one hundred twenty-one thousand, twelve".