122143021 has 16 divisors (see below), whose sum is σ = 163997568. Its totient is φ = 87854400.

The previous prime is 122143019. The next prime is 122143051. The reversal of 122143021 is 120341221.

It is a cyclic number.

It is not a de Polignac number, because 122143021 - 2¹ = 122143019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122142986 and 122143004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122143051) 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, 60010 + ... + 62011.

It is an arithmetic number, because the mean of its divisors is an integer number (10249848).

Almost surely, 2^122143021 is an apocalyptic number.

122143021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122143021 is a deficient number, since it is larger than the sum of its proper divisors (41854547).

122143021 is a wasteful number, since it uses less digits than its factorization.

122143021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122052.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 122143021 is about 11051.8333773180. The cubic root of 122143021 is about 496.1612988343.

Adding to 122143021 its reverse (120341221), we get a palindrome (242484242).

The spelling of 122143021 in words is "one hundred twenty-two million, one hundred forty-three thousand, twenty-one".