1210542695421 has 16 divisors (see below), whose sum is σ = 1615031911680. Its totient is φ = 806541096960.

The previous prime is 1210542695419. The next prime is 1210542695437. The reversal of 1210542695421 is 1245962450121.

It is not a de Polignac number, because 1210542695421 - 2¹ = 1210542695419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210542695441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59240076 + ... + 59260506.

It is an arithmetic number, because the mean of its divisors is an integer number (100939494480).

Almost surely, 2^{1210542695421} is an apocalyptic number.

It is an amenable number.

1210542695421 is a deficient number, since it is larger than the sum of its proper divisors (404489216259).

1210542695421 is a wasteful number, since it uses less digits than its factorization.

1210542695421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31396.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 1210542695421 in words is "one trillion, two hundred ten billion, five hundred forty-two million, six hundred ninety-five thousand, four hundred twenty-one".