121210010012 has 48 divisors (see below), whose sum is σ = 263060700672. Its totient is φ = 47585154240.

The previous prime is 121210009961. The next prime is 121210010041. The reversal of 121210010012 is 210010012121.

It is a junction number, because it is equal to n+sod(n) for n = 121210009975 and 121210010002.

It is a congruent number.

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, 1223288 + ... + 1318655.

It is an arithmetic number, because the mean of its divisors is an integer number (5480431264).

Almost surely, 2^121210010012 is an apocalyptic number.

It is an amenable number.

121210010012 is an abundant number, since it is smaller than the sum of its proper divisors (141850690660).

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

121210010012 is a wasteful number, since it uses less digits than its factorization.

121210010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542098 (or 2542096 counting only the distinct ones).

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

Adding to 121210010012 its reverse (210010012121), we get a palindrome (331220022133).

It can be divided in two parts, 121 and 210010012, that multiplied together give a palindrome (25411211452).

The spelling of 121210010012 in words is "one hundred twenty-one billion, two hundred ten million, ten thousand, twelve".