121223302020 has 144 divisors (see below), whose sum is σ = 378050469888. Its totient is φ = 31419083520.

The previous prime is 121223302019. The next prime is 121223302033. The reversal of 121223302020 is 20203322121.

121223302020 is a `hidden beast` number, since 12 + 122 + 330 + 202 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121223301984 and 121223302002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6590877 + ... + 6609243.

Almost surely, 2^121223302020 is an apocalyptic number.

121223302020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121223302020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189025234944).

121223302020 is an abundant number, since it is smaller than the sum of its proper divisors (256827167868).

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

121223302020 is a wasteful number, since it uses less digits than its factorization.

121223302020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19410 (or 19405 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 121223302020 its reverse (20203322121), we get a palindrome (141426624141).

The spelling of 121223302020 in words is "one hundred twenty-one billion, two hundred twenty-three million, three hundred two thousand, twenty".