201220021010 has 32 divisors (see below), whose sum is σ = 369071277120. Its totient is φ = 78960518208.

The previous prime is 201220021003. The next prime is 201220021019. The reversal of 201220021010 is 10120022102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201220020982 and 201220021000.

It is not an unprimeable number, because it can be changed into a prime (201220021019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6736769 + ... + 6766571.

It is an arithmetic number, because the mean of its divisors is an integer number (11533477410).

Almost surely, 2^201220021010 is an apocalyptic number.

201220021010 is a deficient number, since it is larger than the sum of its proper divisors (167851256110).

201220021010 is a wasteful number, since it uses less digits than its factorization.

201220021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42602.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201220021010 its reverse (10120022102), we get a palindrome (211340043112).

The spelling of 201220021010 in words is "two hundred one billion, two hundred twenty million, twenty-one thousand, ten".