20121010120012 has 6 divisors (see below), whose sum is σ = 35211767710028. Its totient is φ = 10060505060004.

The previous prime is 20121010119967. The next prime is 20121010120019. The reversal of 20121010120012 is 21002101012102.

It is a junction number, because it is equal to n+sod(n) for n = 20121010119974 and 20121010120001.

It is not an unprimeable number, because it can be changed into a prime (20121010120019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2515126264998 + ... + 2515126265005.

Almost surely, 2^{20121010120012} is an apocalyptic number.

It is an amenable number.

20121010120012 is a deficient number, since it is larger than the sum of its proper divisors (15090757590016).

20121010120012 is a wasteful number, since it uses less digits than its factorization.

20121010120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030252530007 (or 5030252530005 counting only the distinct ones).

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

Adding to 20121010120012 its reverse (21002101012102), we get a palindrome (41123111132114).

The spelling of 20121010120012 in words is "twenty trillion, one hundred twenty-one billion, ten million, one hundred twenty thousand, twelve".