1220210212021 has 8 divisors (see below), whose sum is σ = 1220737812224. Its totient is φ = 1219682700720.

The previous prime is 1220210211929. The next prime is 1220210212043. The reversal of 1220210212021 is 1202120120221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220210212021 - 2¹³ = 1220210203829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220210211986 and 1220210212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220210212421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47093956 + ... + 47119858.

It is an arithmetic number, because the mean of its divisors is an integer number (152592226528).

Almost surely, 2^{1220210212021} is an apocalyptic number.

It is an amenable number.

1220210212021 is a deficient number, since it is larger than the sum of its proper divisors (527600203).

1220210212021 is a wasteful number, since it uses less digits than its factorization.

1220210212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44451.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220210212021 its reverse (1202120120221), we get a palindrome (2422330332242).

The spelling of 1220210212021 in words is "one trillion, two hundred twenty billion, two hundred ten million, two hundred twelve thousand, twenty-one".