1211402320422 has 32 divisors (see below), whose sum is σ = 2769455556864. Its totient is φ = 346047952800.

The previous prime is 1211402320313. The next prime is 1211402320451. The reversal of 1211402320422 is 2240232041121.

It is a super-3 number, since 3×1211402320422³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211402320392 and 1211402320401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2571729 + ... + 3006092.

It is an arithmetic number, because the mean of its divisors is an integer number (86545486152).

Almost surely, 2^{1211402320422} is an apocalyptic number.

1211402320422 is an abundant number, since it is smaller than the sum of its proper divisors (1558053236442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211402320422 is a wasteful number, since it uses less digits than its factorization.

1211402320422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5583004.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1211402320422 its reverse (2240232041121), we get a palindrome (3451634361543).

The spelling of 1211402320422 in words is "one trillion, two hundred eleven billion, four hundred two million, three hundred twenty thousand, four hundred twenty-two".