121301202020 has 24 divisors (see below), whose sum is σ = 254748480000. Its totient is φ = 48517441632.

The previous prime is 121301201999. The next prime is 121301202049. The reversal of 121301202020 is 20202103121.

It is a happy number.

It is a super-2 number, since 2×121301202020² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121301201986 and 121301202004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152381 + ... + 515579.

It is an arithmetic number, because the mean of its divisors is an integer number (10614520000).

Almost surely, 2^121301202020 is an apocalyptic number.

121301202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121301202020 is an abundant number, since it is smaller than the sum of its proper divisors (133447277980).

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

121301202020 is a wasteful number, since it uses less digits than its factorization.

121301202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379907 (or 379905 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 121301202020 its reverse (20202103121), we get a palindrome (141503305141).

The spelling of 121301202020 in words is "one hundred twenty-one billion, three hundred one million, two hundred two thousand, twenty".