1221222201134 has 16 divisors (see below), whose sum is σ = 1972834097472. Its totient is φ = 563615146848.

The previous prime is 1221222201131. The next prime is 1221222201137. The reversal of 1221222201134 is 4311022221221.

It is an interprime number because it is at equal distance from previous prime (1221222201131) and next prime (1221222201137).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221222201131) 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, 494534 + ... + 1639209.

It is an arithmetic number, because the mean of its divisors is an integer number (123302131092).

Almost surely, 2^{1221222201134} is an apocalyptic number.

1221222201134 is a deficient number, since it is larger than the sum of its proper divisors (751611896338).

1221222201134 is a wasteful number, since it uses less digits than its factorization.

1221222201134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155771.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1221222201134 its reverse (4311022221221), we get a palindrome (5532244422355).

The spelling of 1221222201134 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred one thousand, one hundred thirty-four".