1000122121112 has 8 divisors (see below), whose sum is σ = 1875228977100. Its totient is φ = 500061060552.

The previous prime is 1000122121013. The next prime is 1000122121121. The reversal of 1000122121112 is 2111212210001.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1000122121112² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62507632562 + ... + 62507632577.

Almost surely, 2^{1000122121112} is an apocalyptic number.

It is an amenable number.

1000122121112 is a deficient number, since it is larger than the sum of its proper divisors (875106855988).

1000122121112 is a wasteful number, since it uses less digits than its factorization.

1000122121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125015265145 (or 125015265141 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1000122121112 its reverse (2111212210001), we get a palindrome (3111334331113).

The spelling of 1000122121112 in words is "one trillion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred twelve".