122106890 has 8 divisors (see below), whose sum is σ = 219792420. Its totient is φ = 48842752.

The previous prime is 122106889. The next prime is 122106947. The reversal of 122106890 is 98601221.

It can be written as a sum of positive squares in 2 ways, for example, as 115971361 + 6135529 = 10769^2 + 2477^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6105335 + ... + 6105354.

Almost surely, 2^122106890 is an apocalyptic number.

122106890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122106890 is a deficient number, since it is larger than the sum of its proper divisors (97685530).

122106890 is a wasteful number, since it uses less digits than its factorization.

122106890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12210696.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 122106890 is about 11050.1986407485. The cubic root of 122106890 is about 496.1123710236.

The spelling of 122106890 in words is "one hundred twenty-two million, one hundred six thousand, eight hundred ninety".