2021211110122 has 4 divisors (see below), whose sum is σ = 3031816665186. Its totient is φ = 1010605555060.

The previous prime is 2021211110101. The next prime is 2021211110123. The reversal of 2021211110122 is 2210111121202.

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., 1307589963001 + 713621147121 = 1143499^2 + 844761^2 .

It is a super-2 number, since 2×2021211110122² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021211110096 and 2021211110105.

It is not an unprimeable number, because it can be changed into a prime (2021211110123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505302777529 + ... + 505302777532.

Almost surely, 2^{2021211110122} is an apocalyptic number.

2021211110122 is a deficient number, since it is larger than the sum of its proper divisors (1010605555064).

2021211110122 is a wasteful number, since it uses less digits than its factorization.

2021211110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010605555063.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2021211110122 its reverse (2210111121202), we get a palindrome (4231322231324).

The spelling of 2021211110122 in words is "two trillion, twenty-one billion, two hundred eleven million, one hundred ten thousand, one hundred twenty-two".