121211101012 has 48 divisors (see below), whose sum is σ = 217402859520. Its totient is φ = 59105655392.

The previous prime is 121211101009. The next prime is 121211101021. The reversal of 121211101012 is 210101112121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121211100983 and 121211101001.

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, 109891653 + ... + 109892755.

It is an arithmetic number, because the mean of its divisors is an integer number (4529226240).

Almost surely, 2^121211101012 is an apocalyptic number.

It is an amenable number.

121211101012 is a deficient number, since it is larger than the sum of its proper divisors (96191758508).

121211101012 is a wasteful number, since it uses less digits than its factorization.

121211101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700 (or 2698 counting only the distinct ones).

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

Adding to 121211101012 its reverse (210101112121), we get a palindrome (331312213133).

It can be divided in two parts, 1212 and 11101012, that added together give a square (11102224 = 3332²).

The spelling of 121211101012 in words is "one hundred twenty-one billion, two hundred eleven million, one hundred one thousand, twelve".