121012010010 has 48 divisors (see below), whose sum is σ = 333138949416. Its totient is φ = 30371641344.

The previous prime is 121012009973. The next prime is 121012010017. The reversal of 121012010010 is 10010210121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 101435243121 + 19576766889 = 318489^2 + 139917^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 121012009974 and 121012010001.

It is not an unprimeable number, because it can be changed into a prime (121012010017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39544879 + ... + 39547938.

Almost surely, 2^121012010010 is an apocalyptic number.

121012010010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121012010010 is an abundant number, since it is smaller than the sum of its proper divisors (212126939406).

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

121012010010 is a wasteful number, since it uses less digits than its factorization.

121012010010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79092847 (or 79092844 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 121012010010 its reverse (10010210121), we get a palindrome (131022220131).

The spelling of 121012010010 in words is "one hundred twenty-one billion, twelve million, ten thousand, ten".