122210029890 has 48 divisors (see below), whose sum is σ = 342188086968. Its totient is φ = 30082468608.

The previous prime is 122210029889. The next prime is 122210029939. The reversal of 122210029890 is 98920012221.

It can be written as a sum of positive squares in 4 ways, for example, as 68266715841 + 53943314049 = 261279^2 + 232257^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52225339 + ... + 52227678.

Almost surely, 2^122210029890 is an apocalyptic number.

122210029890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122210029890 is an abundant number, since it is smaller than the sum of its proper divisors (219978057078).

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

122210029890 is a wasteful number, since it uses less digits than its factorization.

122210029890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104453043 (or 104453040 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

It can be divided in two parts, 122 and 210029890, that added together give a palindrome (210030012).

The spelling of 122210029890 in words is "one hundred twenty-two billion, two hundred ten million, twenty-nine thousand, eight hundred ninety".