1220213001 has 32 divisors (see below), whose sum is σ = 1880064000. Its totient is φ = 689549760.

The previous prime is 1220212999. The next prime is 1220213009. The reversal of 1220213001 is 1003120221.

It is not a de Polignac number, because 1220213001 - 2¹ = 1220212999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1220213009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 847240 + ... + 848678.

It is an arithmetic number, because the mean of its divisors is an integer number (58752000).

Almost surely, 2^1220213001 is an apocalyptic number.

It is an amenable number.

1220213001 is a deficient number, since it is larger than the sum of its proper divisors (659850999).

1220213001 is a wasteful number, since it uses less digits than its factorization.

1220213001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1220213001 is about 34931.5473605164. The cubic root of 1220213001 is about 1068.5919117491.

Adding to 1220213001 its reverse (1003120221), we get a palindrome (2223333222).

The spelling of 1220213001 in words is "one billion, two hundred twenty million, two hundred thirteen thousand, one".