1020121102012 has 6 divisors (see below), whose sum is σ = 1785211928528. Its totient is φ = 510060551004.

The previous prime is 1020121101997. The next prime is 1020121102019. The reversal of 1020121102012 is 2102011210201.

It is a junction number, because it is equal to n+sod(n) for n = 1020121101983 and 1020121102001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020121102019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127515137748 + ... + 127515137755.

Almost surely, 2^{1020121102012} is an apocalyptic number.

It is an amenable number.

1020121102012 is a deficient number, since it is larger than the sum of its proper divisors (765090826516).

1020121102012 is a wasteful number, since it uses less digits than its factorization.

1020121102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255030275507 (or 255030275505 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020121102012 its reverse (2102011210201), we get a palindrome (3122132312213).

The spelling of 1020121102012 in words is "one trillion, twenty billion, one hundred twenty-one million, one hundred two thousand, twelve".