121422020 has 12 divisors (see below), whose sum is σ = 254986284. Its totient is φ = 48568800.

The previous prime is 121422019. The next prime is 121422029. The reversal of 121422020 is 20224121.

It can be written as a sum of positive squares in 2 ways, for example, as 19855936 + 101566084 = 4456^2 + 10078^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121421986 and 121422004.

It is not an unprimeable number, because it can be changed into a prime (121422029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3035531 + ... + 3035570.

It is an arithmetic number, because the mean of its divisors is an integer number (21248857).

Almost surely, 2^121422020 is an apocalyptic number.

121422020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121422020 is an abundant number, since it is smaller than the sum of its proper divisors (133564264).

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

121422020 is a wasteful number, since it uses less digits than its factorization.

121422020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6071110 (or 6071108 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 121422020 is about 11019.1660301495. The cubic root of 121422020 is about 495.1831040453.

Adding to 121422020 its reverse (20224121), we get a palindrome (141646141).

The spelling of 121422020 in words is "one hundred twenty-one million, four hundred twenty-two thousand, twenty".