1211010022 has 4 divisors (see below), whose sum is σ = 1816515036. Its totient is φ = 605505010.

The previous prime is 1211009951. The next prime is 1211010029. The reversal of 1211010022 is 2200101121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2200101121 = 17 ⋅129417713.

It is a junction number, because it is equal to n+sod(n) for n = 1211009990 and 1211010008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211010029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302752504 + ... + 302752507.

It is an arithmetic number, because the mean of its divisors is an integer number (454128759).

Almost surely, 2^1211010022 is an apocalyptic number.

1211010022 is a deficient number, since it is larger than the sum of its proper divisors (605505014).

1211010022 is an equidigital number, since it uses as much as digits as its factorization.

1211010022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605505013.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1211010022 is about 34799.5692789437. The cubic root of 1211010022 is about 1065.8986506436.

Adding to 1211010022 its reverse (2200101121), we get a palindrome (3411111143).

The spelling of 1211010022 in words is "one billion, two hundred eleven million, ten thousand, twenty-two".