1210020121011 has 16 divisors (see below), whose sum is σ = 1797377369760. Its totient is φ = 718950946560.

The previous prime is 1210020120983. The next prime is 1210020121151. The reversal of 1210020121011 is 1101210200121.

It is not a de Polignac number, because 1210020121011 - 2¹⁸ = 1210019858867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1210020121411) 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, 534932610 + ... + 534934871.

It is an arithmetic number, because the mean of its divisors is an integer number (112336085610).

Almost surely, 2^{1210020121011} is an apocalyptic number.

1210020121011 is a deficient number, since it is larger than the sum of its proper divisors (587357248749).

1210020121011 is a wasteful number, since it uses less digits than its factorization.

1210020121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069867526.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1210020121011 its reverse (1101210200121), we get a palindrome (2311230321132).

The spelling of 1210020121011 in words is "one trillion, two hundred ten billion, twenty million, one hundred twenty-one thousand, eleven".