102121001211 has 4 divisors (see below), whose sum is σ = 136161334952. Its totient is φ = 68080667472.

The previous prime is 102121001201. The next prime is 102121001237. The reversal of 102121001211 is 112100121201.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 102121001211 - 2⁷ = 102121001083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102121001201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17020166866 + ... + 17020166871.

It is an arithmetic number, because the mean of its divisors is an integer number (34040333738).

Almost surely, 2^102121001211 is an apocalyptic number.

102121001211 is a deficient number, since it is larger than the sum of its proper divisors (34040333741).

102121001211 is an equidigital number, since it uses as much as digits as its factorization.

102121001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34040333740.

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

Adding to 102121001211 its reverse (112100121201), we get a palindrome (214221122412).

The spelling of 102121001211 in words is "one hundred two billion, one hundred twenty-one million, one thousand, two hundred eleven".