111021222121102 has 32 divisors (see below), whose sum is σ = 173050043120640. Its totient is φ = 53362102959360.

The previous prime is 111021222121099. The next prime is 111021222121109. The reversal of 111021222121102 is 201121222120111.

It is a happy number.

It is a super-2 number, since 2×111021222121102² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111021222121102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111021222121109) 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, 16182433 + ... + 21998035.

It is an arithmetic number, because the mean of its divisors is an integer number (5407813847520).

Almost surely, 2^{111021222121102} is an apocalyptic number.

111021222121102 is a deficient number, since it is larger than the sum of its proper divisors (62028820999538).

111021222121102 is a wasteful number, since it uses less digits than its factorization.

111021222121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5817688.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111021222121102 its reverse (201121222120111), we get a palindrome (312142444241213).

Subtracting 111021222121102 from its reverse (201121222120111), we obtain a palindrome (90099999999009).

It can be divided in two parts, 1110 and 21222121102, that added together give a palindrome (21222122212).

The spelling of 111021222121102 in words is "one hundred eleven trillion, twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred two".