220121021202012 has 36 divisors (see below), whose sum is σ = 635905172362096. Its totient is φ = 62891720343360.

The previous prime is 220121021202001. The next prime is 220121021202023. The reversal of 220121021202012 is 210202120121022.

It is a happy number.

220121021202012 is a `hidden beast` number, since 220 + 1 + 210 + 21 + 202 + 0 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (220121021202001) and next prime (220121021202023).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 436748057689 + ... + 436748058192.

Almost surely, 2^{220121021202012} is an apocalyptic number.

It is an amenable number.

220121021202012 is an abundant number, since it is smaller than the sum of its proper divisors (415784151160084).

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

220121021202012 is a wasteful number, since it uses less digits than its factorization.

220121021202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873496115898 (or 873496115893 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220121021202012 its reverse (210202120121022), we get a palindrome (430323141323034).

The spelling of 220121021202012 in words is "two hundred twenty trillion, one hundred twenty-one billion, twenty-one million, two hundred two thousand, twelve".