1011222212122 has 4 divisors (see below), whose sum is σ = 1516833318186. Its totient is φ = 505611106060.

The previous prime is 1011222212041. The next prime is 1011222212131. The reversal of 1011222212122 is 2212122221101.

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., 890779203721 + 120443008401 = 943811^2 + 347049^2 .

It is a super-2 number, since 2×1011222212122² (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 1011222212122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252805553029 + ... + 252805553032.

Almost surely, 2^{1011222212122} is an apocalyptic number.

1011222212122 is a deficient number, since it is larger than the sum of its proper divisors (505611106064).

1011222212122 is an equidigital number, since it uses as much as digits as its factorization.

1011222212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505611106063.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1011222212122 its reverse (2212122221101), we get a palindrome (3223344433223).

The spelling of 1011222212122 in words is "one trillion, eleven billion, two hundred twenty-two million, two hundred twelve thousand, one hundred twenty-two".