100121102011012 has 6 divisors (see below), whose sum is σ = 175211928519278. Its totient is φ = 50060551005504.

The previous prime is 100121102011001. The next prime is 100121102011043. The reversal of 100121102011012 is 210110201121001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 64296759212676 + 35824342798336 = 8018526^2 + 5985344^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100121102010983 and 100121102011001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12515137751373 + ... + 12515137751380.

Almost surely, 2^{100121102011012} is an apocalyptic number.

It is an amenable number.

100121102011012 is a deficient number, since it is larger than the sum of its proper divisors (75090826508266).

100121102011012 is a wasteful number, since it uses less digits than its factorization.

100121102011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25030275502757 (or 25030275502755 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 100121102011012 its reverse (210110201121001), we get a palindrome (310231303132013).

The spelling of 100121102011012 in words is "one hundred trillion, one hundred twenty-one billion, one hundred two million, eleven thousand, twelve".