12222121011012 has 72 divisors (see below), whose sum is σ = 34951699622112. Its totient is φ = 3703673030400.

The previous prime is 12222121010999. The next prime is 12222121011049. The reversal of 12222121011012 is 21011012122221.

12222121011012 is a `hidden beast` number, since 122 + 221 + 210 + 110 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 571543789 + ... + 571565172.

Almost surely, 2^{12222121011012} is an apocalyptic number.

12222121011012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12222121011012 is an abundant number, since it is smaller than the sum of its proper divisors (22729578611100).

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

12222121011012 is a wasteful number, since it uses less digits than its factorization.

12222121011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143108991 (or 1143108977 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12222121011012 its reverse (21011012122221), we get a palindrome (33233133133233).

It can be divided in two parts, 122221 and 21011012, that multiplied together give a palindrome (2567986897652).

The spelling of 12222121011012 in words is "twelve trillion, two hundred twenty-two billion, one hundred twenty-one million, eleven thousand, twelve".