121111202020190 has 64 divisors (see below), whose sum is σ = 225099629475840. Its totient is φ = 46885762344960.

The previous prime is 121111202020189. The next prime is 121111202020223. The reversal of 121111202020190 is 91020202111121.

It is a happy number.

It is a super-2 number, since 2×121111202020190² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 508552784 + ... + 508790876.

It is an arithmetic number, because the mean of its divisors is an integer number (3517181710560).

Almost surely, 2^{121111202020190} is an apocalyptic number.

121111202020190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121111202020190 is a deficient number, since it is larger than the sum of its proper divisors (103988427455650).

121111202020190 is a wasteful number, since it uses less digits than its factorization.

121111202020190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248037.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 121111202020190 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred two million, twenty thousand, one hundred ninety".