121010020 has 12 divisors (see below), whose sum is σ = 254121084. Its totient is φ = 48404000.

The previous prime is 121009997. The next prime is 121010033. The reversal of 121010020 is 20010121.

It can be written as a sum of positive squares in 2 ways, for example, as 87160896 + 33849124 = 9336^2 + 5818^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121009985 and 121010012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3025231 + ... + 3025270.

It is an arithmetic number, because the mean of its divisors is an integer number (21176757).

Almost surely, 2^121010020 is an apocalyptic number.

121010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121010020 is an abundant number, since it is smaller than the sum of its proper divisors (133111064).

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

121010020 is a wasteful number, since it uses less digits than its factorization.

121010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6050510 (or 6050508 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 121010020 is about 11000.4554451168. The cubic root of 121010020 is about 494.6223967844.

Adding to 121010020 its reverse (20010121), we get a palindrome (141020141).

The spelling of 121010020 in words is "one hundred twenty-one million, ten thousand, twenty".