1220010890 has 64 divisors (see below), whose sum is σ = 2607925248. Its totient is φ = 402105600.

The previous prime is 1220010887. The next prime is 1220010901. The reversal of 1220010890 is 980100221.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338900 + ... + 342480.

It is an arithmetic number, because the mean of its divisors is an integer number (40748832).

Almost surely, 2^1220010890 is an apocalyptic number.

1220010890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220010890 is an abundant number, since it is smaller than the sum of its proper divisors (1387914358).

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

1220010890 is a wasteful number, since it uses less digits than its factorization.

1220010890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1220010890 is about 34928.6542826946. The cubic root of 1220010890 is about 1068.5329094533.

The spelling of 1220010890 in words is "one billion, two hundred twenty million, ten thousand, eight hundred ninety".