122020215 has 16 divisors (see below), whose sum is σ = 195392736. Its totient is φ = 65024000.

The previous prime is 122020211. The next prime is 122020229. The reversal of 122020215 is 512020221.

It is not a de Polignac number, because 122020215 - 2² = 122020211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 122020194 and 122020203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122020211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21475 + ... + 26555.

It is an arithmetic number, because the mean of its divisors is an integer number (12212046).

Almost surely, 2^122020215 is an apocalyptic number.

122020215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122020215 is a deficient number, since it is larger than the sum of its proper divisors (73372521).

122020215 is a wasteful number, since it uses less digits than its factorization.

122020215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6690.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 122020215 is about 11046.2760693367. The cubic root of 122020215 is about 495.9949582712.

Adding to 122020215 its reverse (512020221), we get a palindrome (634040436).

The spelling of 122020215 in words is "one hundred twenty-two million, twenty thousand, two hundred fifteen".