212220021101 has 8 divisors (see below), whose sum is σ = 245131147584. Its totient is φ = 181578627520.

The previous prime is 212220021077. The next prime is 212220021119. The reversal of 212220021101 is 101120022212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212220021101 is a prime.

It is a super-2 number, since 2×212220021101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220021131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567433025 + ... + 567433398.

It is an arithmetic number, because the mean of its divisors is an integer number (30641393448).

Almost surely, 2^212220021101 is an apocalyptic number.

It is an amenable number.

212220021101 is a deficient number, since it is larger than the sum of its proper divisors (32911126483).

212220021101 is a wasteful number, since it uses less digits than its factorization.

212220021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134866451.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212220021101 its reverse (101120022212), we get a palindrome (313340043313).

The spelling of 212220021101 in words is "two hundred twelve billion, two hundred twenty million, twenty-one thousand, one hundred one".