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122121222 = 2353384029
BaseRepresentation
bin1110100011101…
…10110000000110
322111210101211020
413101312300012
5222230334342
620041252010
73012004356
oct721666006
9274711736
10122121222
1162a30533
1234a94006
131c3ba5a2
141230cb66
15aac40ec
hex7476c06

122121222 has 16 divisors (see below), whose sum is σ = 248851440. Its totient is φ = 39938912.

The previous prime is 122121203. The next prime is 122121239. The reversal of 122121222 is 222121221.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191697 + ... + 192332.

It is an arithmetic number, because the mean of its divisors is an integer number (15553215).

Almost surely, 2122121222 is an apocalyptic number.

122121222 is an abundant number, since it is smaller than the sum of its proper divisors (126730218).

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

122121222 is a wasteful number, since it uses less digits than its factorization.

122121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384087.

The product of its digits is 64, while the sum is 15.

The square root of 122121222 is about 11050.8471168504. The cubic root of 122121222 is about 496.1317802596.

Adding to 122121222 its reverse (222121221), we get a palindrome (344242443).

Subtracting 122121222 from its reverse (222121221), we obtain a palindrome (99999999).

The spelling of 122121222 in words is "one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".

Divisors: 1 2 3 6 53 106 159 318 384029 768058 1152087 2304174 20353537 40707074 61060611 122121222