2102212202122 has 4 divisors (see below), whose sum is σ = 3153318303186. Its totient is φ = 1051106101060.

The previous prime is 2102212202093. The next prime is 2102212202147. The reversal of 2102212202122 is 2212022122012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1869069045321 + 233143156801 = 1367139^2 + 482849^2 .

It is a super-2 number, since 2×2102212202122² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2102212202122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525553050529 + ... + 525553050532.

Almost surely, 2^{2102212202122} is an apocalyptic number.

2102212202122 is a deficient number, since it is larger than the sum of its proper divisors (1051106101064).

2102212202122 is a wasteful number, since it uses less digits than its factorization.

2102212202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051106101063.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2102212202122 its reverse (2212022122012), we get a palindrome (4314234324134).

The spelling of 2102212202122 in words is "two trillion, one hundred two billion, two hundred twelve million, two hundred two thousand, one hundred twenty-two".