121121020212 has 24 divisors (see below), whose sum is σ = 282671807712. Its totient is φ = 40365660000.

The previous prime is 121121020211. The next prime is 121121020213. The reversal of 121121020212 is 212020121121.

It is an interprime number because it is at equal distance from previous prime (121121020211) and next prime (121121020213).

It is a junction number, because it is equal to n+sod(n) for n = 121121020191 and 121121020200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121020211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 938539 + ... + 1059762.

It is an arithmetic number, because the mean of its divisors is an integer number (11777991988).

Almost surely, 2^121121020212 is an apocalyptic number.

121121020212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121121020212 is an abundant number, since it is smaller than the sum of its proper divisors (161550787500).

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

121121020212 is a wasteful number, since it uses less digits than its factorization.

121121020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003359 (or 2003357 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121121020212 its reverse (212020121121), we get a palindrome (333141141333).

The spelling of 121121020212 in words is "one hundred twenty-one billion, one hundred twenty-one million, twenty thousand, two hundred twelve".