203121042420012 has 48 divisors (see below), whose sum is σ = 475640638674432. Its totient is φ = 67465382523840.

The previous prime is 203121042419987. The next prime is 203121042420059. The reversal of 203121042420012 is 210024240121302.

203121042420012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×203121042420012² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96378562 + ... + 98463542.

It is an arithmetic number, because the mean of its divisors is an integer number (9909179972384).

Almost surely, 2^{203121042420012} is an apocalyptic number.

It is an amenable number.

203121042420012 is an abundant number, since it is smaller than the sum of its proper divisors (272519596254420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203121042420012 is a wasteful number, since it uses less digits than its factorization.

203121042420012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113958 (or 2113956 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 203121042420012 its reverse (210024240121302), we get a palindrome (413145282541314).

The spelling of 203121042420012 in words is "two hundred three trillion, one hundred twenty-one billion, forty-two million, four hundred twenty thousand, twelve".