121012100012 has 12 divisors (see below), whose sum is σ = 216696086376. Its totient is φ = 59098932480.

The previous prime is 121012099993. The next prime is 121012100017. The reversal of 121012100012 is 210001210121.

It is a junction number, because it is equal to n+sod(n) for n = 121012099966 and 121012100002.

It is not an unprimeable number, because it can be changed into a prime (121012100017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351779189 + ... + 351779532.

It is an arithmetic number, because the mean of its divisors is an integer number (18058007198).

Almost surely, 2^121012100012 is an apocalyptic number.

It is an amenable number.

121012100012 is a deficient number, since it is larger than the sum of its proper divisors (95683986364).

121012100012 is a wasteful number, since it uses less digits than its factorization.

121012100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703558768 (or 703558766 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121012100012 its reverse (210001210121), we get a palindrome (331013310133).

The spelling of 121012100012 in words is "one hundred twenty-one billion, twelve million, one hundred thousand, twelve".