1211142022040 has 32 divisors (see below), whose sum is σ = 2725159340880. Its totient is φ = 484440845952.

The previous prime is 1211142022021. The next prime is 1211142022061. The reversal of 1211142022040 is 402202411121.

It is a super-2 number, since 2×1211142022040² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 770147 + ... + 1736493.

Almost surely, 2^{1211142022040} is an apocalyptic number.

1211142022040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211142022040 is an abundant number, since it is smaller than the sum of its proper divisors (1514017318840).

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

1211142022040 is a wasteful number, since it uses less digits than its factorization.

1211142022040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997691 (or 997687 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1211142022040 its reverse (402202411121), we get a palindrome (1613344433161).

The spelling of 1211142022040 in words is "one trillion, two hundred eleven billion, one hundred forty-two million, twenty-two thousand, forty".