1211214422440 has 32 divisors (see below), whose sum is σ = 2972980856160. Its totient is φ = 440441608000.

The previous prime is 1211214422359. The next prime is 1211214422459. The reversal of 1211214422440 is 442244121121.

It is a junction number, because it is equal to n+sod(n) for n = 1211214422399 and 1211214422408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376379586 + ... + 1376380465.

It is an arithmetic number, because the mean of its divisors is an integer number (92905651755).

Almost surely, 2^{1211214422440} is an apocalyptic number.

1211214422440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211214422440 is an abundant number, since it is smaller than the sum of its proper divisors (1761766433720).

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

1211214422440 is a wasteful number, since it uses less digits than its factorization.

1211214422440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752760073 (or 2752760069 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

Adding to 1211214422440 its reverse (442244121121), we get a palindrome (1653458543561).

The spelling of 1211214422440 in words is "one trillion, two hundred eleven billion, two hundred fourteen million, four hundred twenty-two thousand, four hundred forty".