121001211220011 has 16 divisors (see below), whose sum is σ = 168751300112640. Its totient is φ = 76976039439200.

The previous prime is 121001211219989. The next prime is 121001211220091. The reversal of 121001211220011 is 110022112100121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121001211220011 - 2¹⁸ = 121001210957867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121001211220091) 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, 2092621140 + ... + 2092678961.

It is an arithmetic number, because the mean of its divisors is an integer number (10546956257040).

Almost surely, 2^{121001211220011} is an apocalyptic number.

121001211220011 is a deficient number, since it is larger than the sum of its proper divisors (47750088892629).

121001211220011 is a wasteful number, since it uses less digits than its factorization.

121001211220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4185300546.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121001211220011 its reverse (110022112100121), we get a palindrome (231023323320132).

The spelling of 121001211220011 in words is "one hundred twenty-one trillion, one billion, two hundred eleven million, two hundred twenty thousand, eleven".